Factors influencing adherence in CML and ways to improvement: Results of a patient-driven survey of 2546 patients in 63 countries

A smart pill bottle and text messaging intervention for promoting medication adherence in patients with chronic myeloid leukemia: a pilot study of txt4 TKI

BACKGROUND

Patients undergoing tyrosine kinase inhibitor (TKI) therapy for chronic myeloid leukemia (CML) often face challenges with adherence, despite the efficacy of the treatment. Theory-guided and evidence-informed interventions addressing psychosocial and adherence barriers are critical for promoting adherence. Using a mixed-method approach, the pilot study developed and evaluated the feasibility and potential impact of an intervention "txt4TKI," to support medication and symptom management among CML patients undergoing TKI therapy.

METHODS

Guided by the Necessity and Concerns framework, the study comprised two phases: Phase 1 involved qualitative patient needs assessment interviews informing intervention design. Phase 2 was a single-arm pilot study conducted for 6 months. The objectives of Phase 2 were to assess the feasibility and acceptability of the txt4 TKI intervention, examining enrollment and retention rates, intervention utilization, patient satisfaction, and changes in TKI medication adherence, psychosocial and symptom factors, from baseline to the 6-month follow-up. The intervention integrates a smart pill bottle activated with light, chimes to remind medication taking and three proactive text messages per week addressing clinical importance of TKI, symptom, lifestyle, and distress management as well as a biweekly toxicity assessment with tailored management feedback. Adherence was also objectively measured by the smart pill bottle and psychosocial survey was repeatedly assessed at 3- and 6-month.

RESULTS

The intervention, developed iteratively and theoretically through patient-centered inputs (n = 10) and evidence-based information during Phase 1, integrates knowledge on CML, TKI therapy, self-care symptom management, emotional support, and healthy lifestyle recommendations. In Phase 2, 20 out of 30 eligible patients (67% consent rate), with a mean age of 55.3, 60% females and 65% Non-White participants, were enrolled. Fifty-five percent have been taking their medication for 1-3 years and 50% were taking Dasatinib. A high satisfaction and engagement rate of 90% with an 85% retention rate were observed. While medication self-efficacy significantly improved from baseline to 6 months, the adherence rate to TKI was slightly decreased over time. Post-intervention interviews indicated that participants found the intervention user-friendly, providing valuable information and emotional support, but adjusting the timing and content of interventions to tailor to different stages of therapy might better support sustained adherence.

CONCLUSIONS

The txt4 TKI intervention using interactive text messaging and a smart pill bottle, feasible, and acceptable, demonstrated an increase in medication self-efficacy, an important aspect of medication adherence behaviors. Further research is needed to explore factors that influence the promotion and maintenance of adherence behaviors.

Association between the profile of patients with chronic myeloid leukemia and adherence to tyrosine kinase inhibitors

BackgroundTyrosine kinase inhibitors have substantially improved the quality of life and survival of patients with chronic myeloid leukemia. However, adherence is a complex and crucial aspect for achieving the desired clinical outcomes. Various factors can influence adherence, including the knowledge about the medications used in treatment.AimTo investigate the association between the clinical, sociodemographic and pharmacotherapeutic profile of patients with chronic myeloid leukemia and adherence to tyrosine kinase inhibitors.MethodThis is a cross-sectional study conducted in a specialized outpatient clinic for hematological diseases in the Central-West region of Brazil. Treatment adherence was assessed using the Morisky medication adherence scale and the medication possession ratio. A binary logistic regression was performed to investigate the extent to which adherence could be adequately predicted by the independent variables.ResultsThe study included 153 patients, with a mean age of 51.8 years and a predominance of males (59.5%). Low adherence was observed in 56.2% of patients (Morisky scale) and 24.8% (medication possession ratio). Among the predictors, being male increased the chances of low adherence by 2.22 times and having comorbidities by 2.17 times. Conversely, an increase in diagnosis time was associated with a 0,09 decrease in the chances of low adherence and "Knowing what to do if you miss a dose" was associated with a 0,58 lower chance of low adherence.ConclusionOur study emphasized that adherence can vary depending on the method used and that predictors related to clinical, sociodemographic and pharmacotherapeutic characteristics may be associated with low adherence.

Population pharmacokinetic modeling of asciminib in support of exposure-response and ethnic sensitivity analyses in patients with chronic myeloid leukemia

BACKGROUND

The original population pharmacokinetics (popPK) model for asciminib in patients with chronic myeloid leukemia in chronic phase (CML-CP) was refined to address drug development needs in support of drug submission, namely, attainment of target drug exposure in specific patient populations, populating individual daily exposures for exposure-response analyses of key efficacy and safety endpoints, confirmation of comparability in exposure between 40 mg b.i.d. and 80 mg q.d., and assessment of ethnic insensitivity.

METHODS

Participants from two organ dysfunction studies, patients with CML in blast and acute phases and acute lymphoblastic leukemia and patients from a phase III efficacy study in newly diagnosed Ph + CML-CP, and data from a dedicated phase II study in the Chinese patients previously treated with at least two prior tyrosine kinase inhibitors, and a phase IIIb study comparing two dose regimens of asciminib (40 mg b.i.d. and 80 mg q.d.) were included in the revised popPK model. Covariates evaluated were line of therapy, baseline renal and hepatic functions, Chinese or Japanese ethnicity.

RESULTS

The apparent clearance and steady-state volume of distribution of asciminib were 6.84 L/h and 110 L, respectively, for a typical individual of 70 kg weight and 90 mL/min absolute glomerular filtration rate. Both the 40 mg b.i.d. and 80 mg q.d. resulted in a steady-state daily AUC of 12,600 ng.h/mL, and there was no difference between lines of therapy. Effects of renal or hepatic impairment on clearance were not clinically relevant. Chinese and Japanese exhibited similar PK as that of the global population.

CONCLUSIONS

The 40 mg b.i.d. and 80 mg q.d. regimens are comparable in their daily exposure, supporting the use of the two dosing regimens in newly diagnosed and previously treated CML-CP patients. The PK of asciminib is insensitive to ethnic differences and no dose adjustment is required for severe renal and hepatic impaired patients.

Imatinib adherence prediction using machine learning approach in patients with gastrointestinal stromal tumor

BACKGROUND

Nonadherence to imatinib is common in patients with gastrointestinal stromal tumor (GIST), which is associated with poor prognosis and financial burden. The primary aim of this study was to investigate the adherence rate in patients with GIST and subsequently develop a model based on machine learning (ML) and deep learning (DL) techniques to identify the associated factors and predict the risk of imatinib nonadherence.

METHODS

All eligible patients completed four sections of questionnaires. After the data set was preprocessed, statistically significance variables were identified and further processed to modeling. Six ML and four DL algorithms were applied for modeling, including eXtreme gradient boosting, light gradient boosting machine (LGBM), categorical boosting, random forest, support vector machine, artificial neural network, multilayer perceptron, NaiveBayes, TabNet, and Wide&Deep. The optimal ML model was used to identify potential factors for predicting adherence.

RESULTS

A total of 397 GIST patients were recruited. Nonadherence was observed in 185 patients (53.4%). LGBM exhibited superior performance, achieving a mean f1_score of 0.65 and standard deviation of 0.12. The predominant indicators for nonadherent prediction of imatinib were cognitive functioning, whether to perform therapeutic drug monitoring (if_TDM), global health status score, social support, and gender.

CONCLUSIONS

This study represents the first real-world investigation using ML techniques to predict risk factors associated with imatinib nonadherence in patients with GIST. By highlighting the potential factors and identifying high-risk patients, the multidisciplinary medical team can devise targeted strategies to effectively address the daily challenges of treatment adherence.

Impact of Patient Personality on Adherence to Oral Anticancer Medications: An Opportunity?

Adherence to prescribed oral anticancer therapy is an important determinant of patient outcomes, including progression-free and overall survival. While many factors (eg, medication side effects and out-of-pocket costs, problems with insurance authorization, and timely medication refills) can affect adherence, one that is relatively unexplored is the impact of a patient's attitude and personality. Patient personality influences medication adherence and persistence in nonmalignant chronic conditions such as cardiovascular disease and diabetes. In breast cancer and chronic myeloid leukemia, studies suggest that personality also affects adherence to oral chemotherapy which can be targeted to improve adherence. In this viewpoint, we highlight the opportunity of incorporating patient personality as interventions to oral cancer therapy adherence and discuss current barriers to implementation.

Imatinib Adherence and Persistence in Patients with Chronic Myeloid Leukemia in Belgium: Evidence from Real-World Data

Purpose

Imatinib adherence and persistence are key components of the successful treatment of Chronic Myeloid Leukemia (CML). In Belgium, there is no study assessing these behaviors at a national level. Our study aimed to provide the first nationwide measure and to identify associated pharmacy-based predictors (age, gender, comorbidities). We also assessed mortality and transplantation incidence according to adherence status.

Methods

Based on medico-administrative database linkage, we identified a retrospective Belgian cohort of 1194 patients diagnosed with CML between 2004 and 2016 and treated with imatinib. Adherence was measured over 24 months, considering the proportion of days covered (PDC). Persistence was measured as the time until discontinuation (gap of ≥90 days). Multivariable Poisson regression models with robust standard error were conducted to identify predictors associated with adherence (≥90% PDC). To identify factors associated with persistence, a multivariable Cox regression was performed.

Results

At six months, 60.3% of patients were adherent, declining to 41.5% at 12 months, and to 30.1% at two-year follow-up (n=998). Adherence was greater at a younger age (eg 31-40 years vs ≥75 years, adjusted prevalence ratio (aPR) 1.73; 95% confidence interval (CI): 1.09-2.77) and among patients with no comorbidity (0 vs ≥2 comorbidities (aPR 1.56; 95% CI: 1.11-2.19). The median persistence was 334.5 days (Q1:200-Q3:505.5); persistence at 24 months was 83.6% (n=998). Only age was associated with higher risk of discontinuation, with adjusted hazard ratio (aHR) of 6.05 for patients ≥75 years (95% CI: 5.52-6.58). Transplants and deaths mainly occurred in patients defined as non-adherent at 24 months.

Conclusion

This Belgian nationwide representative study revealed a critical low level of imatinib adherence, which decreased over time even though persistence was high at six months. We pinpointed pharmacy-based predictors that were easily identifiable by health care stakeholders in order to undertake interventions to improve adherence.

Dose Justification for Asciminib in Patients with Philadelphia Chromosome-Positive Chronic Myeloid Leukemia with and Without the T315I Mutation

BACKGROUND AND OBJECTIVE

Asciminib is approved in patients with Philadelphia chromosome-positive chronic myeloid leukemia in chronic phase (Ph+ CML-CP) treated with ≥ 2 prior tyrosine kinase inhibitors. Here, we aimed to demonstrate similarity in efficacy/safety of asciminib 80 mg once daily (q.d.) versus 40 mg twice daily (b.i.d.) in patients with CML-CP without T315I mutation and support the use of the 200-mg b.i.d. dosage in patients harboring T315I, using model-informed drug development.

METHODS

Data were collected from 199 patients in the phase I (NCT02081378; 10-200 mg b.i.d. or 10-400 mg q.d.) and 154 patients in the phase III (NCT03106779; 40 mg b.i.d.) studies. Evaluations were based on population pharmacokinetics (PopPK) and exposure-response (efficacy/safety) analyses.

RESULTS

PopPK showed comparable exposure (area under the curve, AUC0-24h) for 40 mg b.i.d. and 80 mg q.d. (12,638 vs 12,646 ng*h/mL); average maximum and minimum plasma concentrations for 80 mg q.d. were 1.61- and 0.72-fold those of 40 mg b.i.d., respectively. Exposure-response analyses predicted similar major molecular response rates for 40 mg b.i.d. and 80 mg q.d. (Week 24: 27.6% vs 24.8%; Week 48: 32.3% vs 30.6%). Results also established adequacy of 200 mg b.i.d. in patients with T315I mutation (Week 24: 20.7%; Week 48: 23.7%), along with a similar safety profile for all dose regimens.

CONCLUSIONS

Similarity between 40 mg b.i.d. and 80 mg q.d. regimens was investigated, demonstrating similar and substantial efficacy with well-tolerated safety in patients without T315I mutation. The 200-mg b.i.d. dose was deemed safe and effective for patients with T315I mutation.

Current and emerging tyrosine kinase inhibitors for the treatment of chronic myeloid leukemia in young adults

INTRODUCTION

Chronic myeloid leukemia (CML) is more common in older adults, but nearly 15-20% of the patients is between 15 and 39 years of age. In this age group, patients may seek clinical care a much later period of the disease and they may have a heavier burden of disease. In addition, young patients with CML may face unique challenges related to their age, such as concerns about health care, fertility, or careers. The current standard of care for CML is the use of tyrosine kinase inhibitors (TKIs), which induce remission in most young patients and can achieve long-term disease control.

AREAS COVERED

This review summarizes age-specific treatment-related conditions, as well as the effectiveness of TKI therapy in this age group. PubMed, Google Scholar, clinicaltrials.gov and other abstract databases were used while preparing this review. The period of 2001-2023 was chosen as the search window.

EXPERT OPINION

Although we do not have sufficient data, young adult population has a special importance for TKI treatment. Clinical features, efficacy of treatments, and specific conditions in this age group should attract more attention of clinicians and more intensive studies should be conducted in the future.

When can cancer patient treatment nonadherence be considered intentional or unintentional? A scoping review

BACKGROUND

Treatment nonadherence in cancer patients remains high with most interventions having had limited success. Most studies omit the multi-factorial aspects of treatment adherence and refer to medication adherence. The behaviour is rarely defined as intentional or unintentional.

AIM

The aim of this Scoping Review is to increase understanding of modifiable factors in treatment nonadherence through the relationships that physicians have with their patients. This knowledge can help define when treatment nonadherence is intentional or unintentional and can assist in predicting cancer patients at risk of nonadherence and in intervention design. The scoping review provides the basis for method triangulation in two subsequent qualitative studies: 1. Sentiment analysis of online cancer support groups in relation to treatment nonadherence; 2. A qualitative validation survey to refute / or validate claims from this scoping review. Thereafter, framework development for a future (cancer patient) online peer support intervention.

METHODS

A Scoping Review was performed to identify peer reviewed studies that concern treatment / medication nonadherence in cancer patients-published between 2000 to 2021 (and partial 2022). The review was registered in the Prospero database CRD42020210340 and follows the PRISMA-S: an extension to the PRISMA Statement for Reporting Literature Searches in Systematic Searches. The principles of meta-ethnography are used in a synthesis of qualitative findings that preserve the context of primary data. An aim of meta-ethnography is to identify common and refuted themes across studies. This is not a mixed methods study, but due to a limited qualitativevidence base and to broaden findings, the qualitative elements (author interpretations) found within relevant quantitative studies have been included.

RESULTS

Of 7510 articles identified, 240 full texts were reviewed with 35 included. These comprise 15 qualitative and 20 quantitative studies. One major theme, that embraces 6 sub themes has emerged: 'Physician factors can influence patient factors in treatment nonadherence'. The six (6) subthemes are: 1. Suboptimal Communication; 2. The concept of Information differs between Patient and Physician; 3.Inadequate time. 4. The need for Treatment Concordance is vague or missing from concepts; 5. The importance of Trust in the physician / patient relationship is understated in papers; 6. Treatment concordance as a concept is rarely defined and largely missing from studies.

LINE OF ARGUMENT WAS DRAWN

Treatment (or medication) nonadherence that is intentional or unintentional is often attributed to patient factors-with far less attention to the potential influence of physician communication factors. The differentation between intentional or unintentional nonadherence is missing from most qualitative and quantitative studies. The holistic inter-dimensional / multi-factorial concept of 'treatment adherence' receives scant attention. The main focus is on medication adherence / nonadherence in the singular context. Nonadherence that is unintentional is not necessarily passive behaviour and may overlap with intentional nonadherence. The absence of treatment concordance is a barrier to treatment adherence and is rarely articulated or defined in studies.

CONCLUSION

This review demonstrates how cancer patient treatment nonadherence is often a shared outcome. An equal focus on physican and patient factors can increase understanding of the two main types of nonadherence (intentional or unintentional). This differentation should help improve the fundamentals of intervention design.

Effectiveness of digital care platform CMyLife for patients with chronic myeloid leukemia: results of a patient-preference trial

BACKGROUND

Two most important factors determining treatment success in chronic myeloid leukemia (CML) are adequate medication compliance and molecular monitoring albeit still being suboptimal. The CMyLife platform is an eHealth innovation, co-created with and for CML patients, aiming to improve their care, leading to an increased quality of life and the opportunity of hospital-free care.

OBJECTIVE

To explore the effectiveness of CMyLife in terms of information provision, patient empowerment, medication compliance, molecular monitoring, and quality of life.

METHODS

Effectiveness of CMyLife was explored using a patient-preference trial. Upon completion of the baseline questionnaire, participants actively used (intervention group) or did not actively use (questionnaire group) the CMyLife platform for at least 6 months, after which they completed the post-intervention questionnaire. Scores between the intervention group and the questionnaire group were compared with regard to the within-subject change between baseline and post-measurement using Generalized Estimating Equation models.

RESULTS

At baseline, 33 patients were enrolled in the questionnaire group and 75 in the intervention group. Online health information knowledge improved significantly when actively using CMyLife and patients felt more empowered. No significant improvements were found regarding medication compliance and molecular monitoring, which were already outstanding. Self-reported effectiveness showed that patients experienced that using CMyLife improved their medication compliance and helped them to oversee their molecular monitoring. Patients using CMyLife reported more symptoms but were better able to manage these.

CONCLUSIONS

Since hospital-free care has shown to be feasible in time of the COVID-19 pandemic, eHealth-based innovations such as CMyLife could be a solution to maintain the quality of care and make current oncological health care services more sustainable.

TRIAL REGISTRATION

ClinicalTrials.gov NCT04595955 , 22/10/2020.

Measurable residual disease in chronic myeloid leukemia

Chronic myeloid leukemia is characterized by a single genetic abnormality resulting in a fusion gene whose mRNA product is easily detected and quantified by reverse-transcriptase polymerase chain reaction analysis. Measuring residual disease was originally introduced to identify patients relapsing after allogeneic stem cell transplantation but rapidly adopted to quantify responses to tyrosine kinase inhibitors. Real-time quantitative polymerase chain reaction is now an essential tool for the management of patients and is used to influence treatment decisions. In this review we track this development including the international collaboration to standardize results, discuss the integration of molecular monitoring with other factors that affect patients' management, and describe emerging technology. Four case histories describe varying scenarios in which the accurate measurement of residual disease identified patients at risk of disease progression and allowed appropriate investigations and timely clinical intervention.

Defining Higher-Risk Chronic Myeloid Leukemia: Risk Scores, Genomic Landscape, and Prognostication

PURPOSE OF REVIEW

The chronic myeloid leukemia (CML) treatment success story is incomplete as some patients still fail therapy, leading to end-stage disease and death. Here we discuss recent research into CML incidence, the role of comorbidities on survival and detecting patients at risk of failing therapy.

RECENT FINDINGS

The incidence of CML has fallen markedly in high social-demographic index (SDI) regions of the world but there is disturbing evidence that this is not the case in low and low-middle SDI countries. Now that CML patients more frequently die from their co-morbid conditions than from CML the Adult Comorbidity Evaluation-27 score can assist in risk assessment at diagnosis. Non-adherence to therapy contributes greatly to treatment failure. A good doctor-patient relationship and social support promote good adherence, but patient age, gender, and financial burden have negative effects, suggesting avenues for intervention. Mutations in cancer-associated genes adversely affect outcome and their detection at diagnosis may guide therapeutic choice and offer non-BCR::ABL1 targeted therapies. A differential gene expression signature to assist risk detection is a highly sought-after diagnostic tool being actively researched on several fronts. Detecting patients at risk of failing therapy is being assisted by recent technological advances enabling highly sensitive genomic and expression analysis of insensitive cells. However, patient lifestyle, adherence to therapy, and comorbidities are critical risk factors that need to be addressed by interventions such as social and financial support.

Medication Non-Adherence in Rheumatology, Oncology and Cardiology: A Review of the Literature of Risk Factors and Potential Interventions

Medication adherence is directly associated with health outcomes. Adherence has been reviewed extensively; however, most studies provide a narrow scope of the problem, covering a specific disease or treatment. This project's objective was to identify risk factors for non-adherence in the fields of rheumatology, oncology, and cardiology as well as potential interventions to improve adherence and their association with the risk factors. The project was developed in three phases and carried out by a Steering Committee made up of experts from the fields of rheumatology, oncology, cardiology, general medicine, and hospital and community pharmacy. In phase 1, a bibliographic review was performed, and the articles/reviews were classified according to the authors' level of confidence in the results and their clinical relevance. In phase 2, 20 risk factors for non-adherence were identified from these articles/reviews and agreed upon in Steering Committee meetings. In phase 3, potential interventions for improving adherence were also identified and agreed upon. The results obtained show that adherence is a dynamic concept that can change throughout the course of the disease, the treatments, and other factors. Educational interventions are the most studied ones and have the highest level of confidence in the authors' opinion. Information and education are essential to improve adherence in all patients.

A clinician perspective on the treatment of chronic myeloid leukemia in the chronic phase

Tyrosine kinase inhibitors (TKIs) have vastly improved long-term outcomes for patients with chronic myeloid leukemia (CML). After imatinib (a first-generation TKI), second- and third-generation TKIs were developed. With five TKIs (imatinib, dasatinib, bosutinib, nilotinib, and ponatinib) targeting BCR::ABL approved in most countries, and with the recent approval of asciminib in the USA, treatment decisions are complex and require assessment of patient-specific factors. Optimal treatment strategies for CML continue to evolve, with an increased focus on achieving deep molecular responses. Using clinically relevant case studies developed by the authors of this review, we discuss three major scenarios from the perspective of international experts. Firstly, this review explores patient-specific characteristics that affect decision-making between first- and second-generation TKIs upon initial diagnosis of CML, including patient comorbidities. Secondly, a thorough assessment of therapeutic options in the event of first-line treatment failure (as defined by National Comprehensive Cancer Network and European LeukemiaNet guidelines) is discussed along with real-world considerations for monitoring optimal responses to TKI therapy. Thirdly, this review illustrates the considerations and importance of achieving treatment-free remission as a treatment goal. Due to the timing of the writing, this review addresses global challenges commonly faced by hematologists treating patients with CML during the COVID-19 pandemic. Lastly, as new treatment approaches continue to be explored in CML, this review also discusses the advent of newer therapies such as asciminib. This article may be a useful reference for physicians treating patients with CML with second-generation TKIs and, as it is focused on the physicians' international and personal experiences, may give insight into alternative approaches not previously considered.

Brazilian chronic myeloid leukemia working group recommendations for discontinuation of tyrosine kinase inhibitors in chronic myeloid leukemia in clinical practice

Introduction

Treatment-free remission (TFR) is a new goal of chronic myeloid leukemia (CML) therapy. TFR is feasible when the patient has achieved a deep and stable molecular response and met the criteria required to ensure its success. Treatment discontinuation should not be proposed to the CML patient if minimum conditions are not met. In Brazil, for example, molecular tests (BCR::ABL1) are not broadly available, making it difficult to monitor the patients adequately.

Objective

In this sense, providing TFR recommendations for Brazilian physicians are therefore necessary. These recommendations include the main criteria checklist to start the TKIs treatment discontinuing process in patients diagnosed with CML and the population-eligible characteristics for treatment discontinuation.

Method

Age, risk score at diagnosis, TKI treatment duration, BCR::ABL1 transcripts type, depth of the molecular response for treatment discontinuation, treatment adherence, patient monitoring and withdrawal syndrome are essential factors to consider in TFR. After TKI discontinuation, BCR::ABL1 transcripts monitoring should be more frequent. When a major molecular response loss is observed during the monitoring of a patient in TFR, the TKI treatment should be resumed.

Conclusion

These recommendations should serve as a basis for medical professionals interested in proposing TKI discontinuation for CML patients in clinical practice. It is important to highlight that, despite the benefits of TFR for the patients and the health system, it should only be feasible following the minimum standards proposed in this recommendation.

Population Pharmacokinetics of Asciminib in Tyrosine Kinase Inhibitor-Treated Patients with Philadelphia Chromosome-Positive Chronic Myeloid Leukemia in Chronic and Acute Phases

BACKGROUND

Asciminib, a first-in-class, highly potent and specific ABL/BCR-ABL1 inhibitor, has shown superior efficacy compared to bosutinib in patients with Philadelphia chromosome-positive chronic myeloid leukemia in chronic phase, treated with two or more tyrosine kinase inhibitors. This study aimed to describe pharmacokinetic (PK) properties of asciminib and to identify clinically relevant covariates impacting its exposure.

METHODS

A population PK (PopPK) model was developed using a two-compartment model with delayed first-order absorption and elimination. The analysis included PK data from two clinical studies (Phases 1 and 3) involving 353 patients, with total daily dose of asciminib in the range of 20-400 mg.

RESULTS

The nominal total daily dose was incorporated as a structural covariate on clearance (CL), and body weight (BW) was included as a structural covariate via allometric scaling on CL and central volume. Renal function and formulation were included as statistically significant covariates on CL and absorption (k_a), respectively. The simulation results revealed a modest but clinically non-significant effect of baseline BW and renal function on k_a. Correlations between covariates, such as baseline demographics and disease characteristics, heavy smoking status, hepatic function, and T315I mutation status, were not statistically significant with respect to CL, and they were not incorporated in the final model. Additionally, the final model-based simulations demonstrated comparable exposure and CL for asciminib 40 mg twice daily and 80 mg once daily (an alternative regimen not studied in the Phase 3 trial), as well as similar PK properties in patients with and without the T315I mutation.

CONCLUSIONS

The final PopPK model adequately characterized the PK properties of asciminib and assessed the impact of key covariates on its exposure. The model corroborates the use of the approved asciminib dose of 80 mg total daily dose as 40 mg twice daily, and supports the use of 80 mg once daily as an alternative dose regimen to facilitate patient's compliance. TRIAL REGISTRATION NUMBER [DATE OF REGISTRATION]: First-in-human (CABL001X2101, Phase 1), ClinicalTrials.gov identifier: NCT02081378 [28 February 2014]; ASCEMBL (CABL001A2301, Phase 3), ClinicalTrials.gov identifier: NCT03106779 [10 April 2017].

An investigation of the use of app technology to support clinical management of patients with chronic myeloid leukaemia (CML)

Introduction

The availability of healthcare apps to support patient self-management of various medical conditions, including cancer, has increased considerably in the past decade. However, there are limited published data on the role of apps in the management of chronic myeloid leukaemia (CML). The primary aim of this study was to investigate the current and future role of apps as a means of supporting patients with CML.

Methods

A 31-item questionnaire was developed and distributed to patients via three on-line CML support groups.

Results

Responses were received from 286 patients. There was an approximate 2:1 female: male split and the majority (54%, n = 155) resided in the United Kingdom. 91% (n = 260) of respondents were currently receiving drug treatment for their CML. 23.4% (n = 67) of respondents were aware that apps were available to support their CML management and 11.5% (n = 33) had experience of using such an app. 94.1% (n = 238) of those who had not used a patient support app in the past stated that they would consider using an app in the future to help manage their disease. App awareness was significantly higher amongst male patients (30.3% vs. 19.9%). Likelihood of being a current or previous app user was higher amongst younger patients (16.3% for <55 years old vs. 5.6% for ≥55 years old) whilst younger patients and those with a more recent diagnosis of CML were both more likely to be interested in using an app in the future. When asked about potential app functionality, a drug interaction checker was the feature of greatest interest to respondents.

Conclusions

We have identified both a lack of awareness of and a low uptake of patient support apps amongst CML patients. Importantly, we have demonstrated a clear interest in CML-specific apps amongst this population. Based on the functionality that study participants were most interested in, we will work with health care professionals, app developers and patients to develop a new app to deliver holistic support to CML patients.

Filling the gaps of patient information needs and information perception in chronic myeloid leukemia with the patient-physician co-produced web-based platform CMyLife

BACKGROUND

For patients with chronic myeloid leukemia, a web-based platform CMyLife was developed. Its aim is to enhance patient empowerment, by adequate information provision, among others. Before evaluating its effect, information provision and needs in current care were assessed.

OBJECTIVE

To assess patients' evaluation of received information and information needs before CMyLife utilization and whether this information source is used correspondingly. Additionally, we explored predicting patient factors in information perception.

PATIENT INVOLVEMENT

CMyLife platform was developed with active patient participation.

METHODS

We conducted a cross-sectional survey among 203 CML patients before launch of the CMyLife platform, using validated questionnaires on information provision and predictive factors. We focused on website utilization during the first 3 years, using Google Analytics. Regression analyses were performed to determine influence of patient factors on information perception.

RESULTS

Global perceived information provision was scored 42.8 (0-100). Information on other services such as rehabilitation and psychological support, and effects of treatment on sexuality showed room for improvement. One out of 3 knew where to find useful health information online. But more information was desired by 36% of them. Age ≥65 years, time since diagnosis and low education were positively associated with this need. Pages on medication and side effects were visited the most.

DISCUSSION

To fill the gap in perceived provision and needs, information should be adjusted more to the individual in content, manner and timing. Age, time since diagnosis, and educational level are of influence in perceived information, and specific needs within these groups should be further explored.

PRACTICAL VALUE

CMyLife provides reliable and up-to-date information for low eHealth literacy skilled patients concerning multiple topics indicated by patients.

Oral and Subcutaneous Anticancer Therapy Training Course for Non-physician Healthcare Professionals: a Survey Evaluating the Relevance of its Content and its Implications in the Practice of Cancer Care

The creation of antitumor agents with an oral or subcutaneous route of administration has had important positive implications in the development of drugs to treat cancers, but issues such as false drug intake, uncontrolled side effects, and limited supervision may jeopardize the ability of these agents to improve treatment. A potential solution is the recruitment of non-physician healthcare professionals (i.e., nurses and physician assistants) and a special training course for them that focuses on the improvement of patient compliance. We developed and implemented three special professional training modules for non-physician healthcare professionals, which focus on the pharmacological aspects and side effects of oral and subcutaneous antitumor medications in regard to management strategies and communication issues that these non-physician healthcare professionals should address. Subsequently, we administered a questionnaire survey evaluating the course content and the implementation of the course in practice to the training participants to collect data for its implementation. Of 165 questionnaires that were administered, 44 (27%) were answered. The participants rated the course as being highly useful for their daily work. The participants reported a significant improvement in their professional expertise from the course. They emphasized the importance of medical topics and practical content to be included in the course delivery. The course encouraged 75% of the responders to start independent consultations with cancer patients that focused on questions of medication adherence for oral and subcutaneous antitumor medications, as well as the management of their side effects. Based on our results, at least a portion of the non-physician healthcare workforce is highly interested in engaging in active and autonomous co-supervision of patients who are treated with oral and subcutaneous antitumor medications. In addition to the theoretical basics of the treatment modalities, educational courses on oral and subcutaneous antitumor medications for non-physician healthcare professionals should focus on practical training and topics relevant to patient care.

A smartphone program to support adherence to oral chemotherapy in people with cancer: Proof-of-concept trial

AIM

Nonadherence to oral chemotherapy (OC) can lead to health complications, including premature death. Mobile phones are increasingly used to deliver medication adherence interventions. However, there is limited evidence about mobile phone-based interventions to increase adherence to OC, specifically. This study explores the proof-of-concept of a smartphone program to support adherence to OC in people with cancer.

METHODS

This was a 10-week, nonrandomized, multisite trial. The outcomes assessed were acceptability, satisfaction with the intervention, adherence to OC, knowledge about OC, and side-effects presence and severity. The program consisted of short message service (SMS) reminders to take OC, as well as information about OC, including the management of side-effects.

RESULTS

Twenty-two participants (17-74 y/o, median age 60 y/o) were recruited at six hospitals. The sample included 10 different cancer diagnoses (predominance of breast cancer) and 11 OC medications. Acceptability of the intervention was high, with 95% of the enrolled participants completing postintervention measures, and 81% reporting high satisfaction with the program. The intervention was found to have no effect on supporting adherence to OC (assessed by self-report and medication event monitoring system) in this sample. An increase in knowledge about OC was observed at postintervention (p = 0.010).

CONCLUSIONS

This study demonstrated proof-of-concept of the smartphone program and highlighted the need for intervention and trial design-related refinements. Future work should evaluate the effect of the program on adherence to OC with nonadherent patients.

Assessment of Oral Chemotherapy Nonadherence in Chronic Myeloid Leukemia Patients Using Brief Measures in Community Cancer Clinics: A Pilot Study

The purpose of this pilot study was to assess Chronic Myeloid Leukemia (CML) patients’ adherence to, beliefs about, and barriers to oral anticancer agents (OAC) using brief self-report measures in community-based cancer clinics. Patients completed a structured interview including a health literacy assessment, a Brief Medication Questionnaire, two single-item self-report adherence questions, and the Medications Adherence Reasons Scale. Of the 86 participants, 88.4% were white; 55.8% male; mean age, 58.7 years; and 22.1% had limited health literacy. Nonadherence (missing at least one dose in the last week) was reported by 18.6% of participants and associated (p < 0.003) with less-than-excellent perceived ability to take CML medications (16.3%). Black participants reported more difficulty taking CML medications than white participants (28.6% vs. 8.3%, p = 0.053). Among all participants, 43.0% reported their CML medicine was ineffective and 24.4% that taking CML pills was somewhat to very hard. The most common reasons for missing a dose were simply missed it (24.4%) and side effects (18.6%). Most patients perceived their ability to take CML medication was good to excellent, yet nearly one in five reported missing at least one dose in the last week. Brief, no-cost self-report assessments to screen CML patients’ OAC adherence, barriers, and beliefs could facilitate counseling in busy community cancer clinics.

Myeloproliferative neoplasm questionnaire: assessing patient disease knowledge in the modern digital information era

There is growing Internet and social media use among patients with rare blood cancers, notably myeloproliferative neoplasms (MPNs). A 38-item online questionnaire was developed to assess patients' (n = 983) disease understanding and use of online resources regarding MPN. Many responders (74%) reported unawareness of additional mutations beyond their primary molecular marker(s); 32% were unsure of their prognostic risk stratification. Additionally, 89% reported using online resources (Facebook (61%); Google/Google+ (42%); YouTube (34%); blogs (26%); Twitter (5%)) to seek information about MPN. Despite this, results showed many gaps in patients' basic disease knowledge. Our findings suggest an important difference in social media habits between physicians and patients: physicians are rapidly adopting Twitter as their preferred medium for sharing medical knowledge; however, patients often prefer other social mediums. Educational campaigns should be designed in more personalized ways, aiming to fit a variety of online platforms to maximize reach and impact for patients with MPN.

Molecular response to imatinib in patients with chronic myeloid leukemia in Tanzania

Imatinib is the mainstay of treatment of patients with chronic myeloid leukemia (CML) in Tanzania. Monitoring molecular response to therapy by real-time polymerase chain reaction at defined milestones is necessary for early detection of treatment failure. However, this assay is not routinely performed in Tanzania; therefore, the depth of molecular response among patients with CML is not known. A total of 158 patients with previously diagnosed CML who received imatinib treatment were recruited from January 2019 and followed up through October 2020 at Ocean Road Cancer Institute. Information was obtained at the time of diagnosis and follow-up. Blood samples were collected in EDTA tubes to measure the BCR/ABL ratio on the Gene Xpert system for molecular response determination. The median age of the 158 adult patients was 45 years (range, 18-86). By reference to established treatment milestones, only 37 (23.4%) achieved optimal molecular response. Signs of advanced-stage disease, in particular the need for red cell transfusions before diagnosis (adjusted odds ratio [AOR], 3.4; 95% CI, 1.32-9.17) and cytopenias (AOR, 2.26; 95% CI, 1.03-4.96) necessitating drug interruptions were statistically validated predictors of treatment failure on multivariate, multinomial logistic regression. Patient survival at the 22-month follow-up was lowest, with 78.6% (95% CI, 69.4-85.4) in the failure-to-respond category and highest in patients achieving optimal response 97.0% (95% CI, 80.9-99.6). In summary, the majority of patients with CML treated with imatinib in Tanzania do not obtain deep molecular response. This outcome can be attributed to late diagnosis, the development of cytopenias requiring multiple drug interruptions, and poor adherence to treatment.

Medication Experience and Adherence to Oral Chemotherapy: A Qualitative Study of Patients' and Health Professionals' Perspectives

Lack of adherence constitutes one of the most important challenges in patients undergoing treatment with oral antineoplastic drugs (ANEO). Understanding cancer patients’ experiences with respect to their medication is key for optimizing adherence and therapeutic results. We aimed to assess the medication experience (ME) in patients with cancer in treatment with ANEO, to describe the barriers and facilitators related to the disease and its treatment and to compare them with the healthcare professionals’ perspectives. We carried out an exploratory qualitative study in the University Hospital of San Juan de Alicante, Spain. Three focus groups and two nominal group discussions were conducted with 23 onco-hematological patients treated with ANEO and 18 health professionals, respectively. The data were analyzed using content analyses and were eventually triangulated. The most impactful aspects in patients’ ME were the presence of adverse effects; lack of information about treatment; beliefs, needs and expectations regarding medications; social and family support; and the relationship with the health professionals. Both patients and professionals agreed on considering the negative side effects and the information about treatment as the main barriers and facilitators of adherence, respectively, although the approaches differed between both profiles. The professionals offered a more technical vision while patients prioritized the emotional burden and motivation associated with the disease and medication. This study allowed us to understand the real-life experiences of patients being treated with ANEO and explore the factors which had an impact on adherence to treatment. This understanding enables professionals to have a positive influence on patients’ behavior and provide individualized care plans. Pharmacists’ assistance is relevant to support patients’ adherence and self-management.

Impact of socio-demographic co-variates on prognosis, tyrosine kinase-inhibitor use and outcomes in persons with newly-diagnosed chronic myeloid leukaemia

PURPOSE

Define the impact of socio-demographic co-variates on outcomes of persons with newly-diagnosed chronic phase chronic myeloid leukaemia (CML).

METHODS

Data of 961 consecutive subjects with newly-diagnosed CML were integrated for these outcomes in multi-variable Cox regression analyses after adjusting for confounders and interactions.

RESULTS

Elder age was associated with less use of a 2nd generation TKI as initial therapy. Household registration, comorbidity(ies) and education level were associated with use of a generic rather than branded TKI as initial therapy. Subjects with lower education level were more likely to be diagnosed with CML because of leukaemia-related symptoms. Rural registration and lower education level were also associated with a greater likelihood of switching TKI-therapy. Lower education level was associated with lower likelihood of achieving MMR [HR = 0.8 (0.7, 0.9), p = 0.002], MR^4.5 [HR = 0.8 (0.7, 1.0), p = 0.055], and poor FFS [HR = 1.7 (1.3, 2.5); p < 0.001], PFS [HR = 2.0 (1.1, 5.0); p = 0.014], CML-related survival [HR = 2.5 (1.0, 10.0); p = 0.060] and survival [HR = 2.5 (1.0, 10.0); p = 0.043]. Males had lower rates of MMR and MR^4.5 and worse FFS, but not survival compared with females. Being married was associated with a higher rate of MR^4.5, fewer failures, progressions, and deaths.

CONCLUSION

Socio-demographic co-variates have a strong impact on therapy choice and responses in persons with newly-diagnosed CML, including circumstances of diagnosis, risk category and prognosis, use of initial TKI, switching TKIs, response to TKI-therapy, and outcomes.

Nonadherence to antihypertensive medications amongst patients with uncontrolled hypertension: A retrospective study

ABSTRACT

Medication nonadherence represents a modifiable risk factor for patients with hypertension. Identification of nonadherent patients could have significant clinical and economic implications in the management of uncontrolled hypertension.We analysed the results of 174 urinary adherence screens from patients referred to Addenbrooke's Hospital, Cambridge, for uncontrolled hypertension. Cases were identified for evaluation by results of liquid chromatography-tandem mass spectrometry of urine samples (males: 91; females: 83; age range: 17-87). We performed a binary logistic regression analysis for nonadherence using age, sex, and number of medications prescribed (both antihypertensives and non-antihypertensives separately) as independent predictors. Rates of nonadherence for individual antihypertensive drugs were calculated if prescribed to ≥10 patients.The overall rate of nonadherence to one or more prescribed antihypertensive medications was 40.3%. 14.4% of all patients were nonadherent to all prescribed antihypertensive medications (complete nonadherence), whereas 25.9% of all patients were nonadherent to at least 1, (but not all) prescribed antihypertensive medications (partial nonadherence). 72% of patients were prescribed ≥3 antihypertensives And for every increase in the number of antihypertensive medications prescribed, nonadherence increased with adjusted odds ratios of 2.9 (P < .001). Logistic regression showed that women were 3.3 times more likely to be nonadherent (P = .004). Polypharmacy (≥6 medications prescribed for hypertension and/or concomitant comorbidities) was prevalent in 52%. Bendroflumethiazide and chlortalidone demonstrated the highest and lowest nonadherences respectively (45.5% and 11.8%).Rate of nonadherence in patients with hypertension was significantly impacted by sex and number of antihypertensive medications prescribed. Understanding these factors is crucial in identifying and managing nonadherence.

Assessment of Oral Anticancer Medication Adherence: A Survey from a Tertiary Cancer Center

Background Adherence to oral anticancer medication is important in cancer chemotherapy, with the advent of many oral anticancer regimens to ensure adequate cytologic response. Literature on adherence to oral anticancer therapy in India is very less. Materials and Methods This is a cross sectional analytical study consisting of all fit patients > 18 years of age taking oral anticancer therapy, with or without intravenous (IV) chemotherapy. Adherence was determined using Morisky-Green-Levine (MGL) scale, and factors affecting adherence details about cancer and treatment were obtained. All fit patients were recruited. Information was obtained using Tamil questionnaire and pro forma. Observation Of 152 patients, only 111 patients were found to be adherent to treatment. The mean age of the study population was 49.03 ± 13.48 years. Only 12.5% of patients were aware of the diagnosis, treatment, and outcome. The study population consisted mainly of patients with chronic myeloid leukemia, colorectal carcinoma, breast carcinoma, and stomach carcinoma, which amounted for 78.3% of the study population. Bivariate analysis concluded that duration of treatment, adverse drug reaction (ADR), duration of oral anticancer drug intake in a month, coadministration with IV anticancer drugs, and frequency of drug intake (anticancer drug) were significant factors affecting drug adherence. Multivariate analysis of the above variables was insignificant, but ADR tended toward significance. Conclusion Drug adherence plays a major role in treatment outcome in cancer patients. ADR was independently associated with decreased drug adherence. Key interventions which should include counseling and behavioral modifications will reduce nonadherence.

A Pharmacist-Led Oral Chemotherapy Program's Impact on Chronic Myeloid Leukemia Patient Satisfaction, Adherence, and Outcomes

Patients with chronic myeloid leukemia (CML) can be treated with oral tyrosine kinase inhibitors (TKIs). Pharmacist-led oral chemotherapy programs (POCPs) can improve TKI adherence rates, but evaluation of patient satisfaction with such programs is rare. The purpose of this analysis was to compare the satisfaction of patients with CML taking TKIs enrolled in a POCP program with that of those not enrolled. Secondary objectives were to assess adherence rates, patient-reported value, early molecular response (EMR) rates, and major molecular response (MMR) rates. This study utilized an anonymous telephone survey of patients who had taken TKIs for at least 3 months. Molecular response was determined by chart review. Of 40 patients surveyed, 50% were enrolled in the POCP, and the POCP group had more African Americans than the non-POCP group. More patients in the POCP were satisfied with their care than in the non-POCP group (100% vs. 75%, p = .047). There were no differences in high patient-reported adherence (55% vs. 60%, p = 1.000), patient-reported value for integrated services (95% vs. 90%, p = 1.000), achievement of EMR (75% vs. 75%, p = 1.000), or MMR (85% vs. 85%, p = 1.000). Patients in the POCP received more structured clinical pharmacy services; however, both groups felt the clinical pharmacist played a major role in their care (85% vs. 90%, p = 1.000). Patients in the non-POCP group reported lower satisfaction than those enrolled resulting from fragmented care that was likely due to external specialty pharmacies. Irrespective of POCP enrollment, patients reported clinical pharmacists play a major role in their therapy and value integration of their specialty pharmacy and medical team.

Assessment of Adherence to Imatinib and Health-Related Quality of Life Among Patients with Gastrointestinal Stromal Tumor: A Cross-Sectional Study in an Oncology Clinic in Malaysia

PURPOSE

To evaluate the rate and predictors of non-adherence to imatinib in gastrointestinal stromal tumor (GIST) patients, as well as to compare the difference in health-related quality of life (HRQOL) between adherent and non-adherent patients.

PATIENTS AND METHODS

A cross-sectional study at the Oncology Clinic, Hospital Kuala Lumpur was conducted from March to August 2018. All patients with metastatic and/or unresectable GIST aged ≥18 years old and on at least 3 months of imatinib were included. Adherence to imatinib was assessed using the 10-item validated Medication Compliance Questionnaire, with a score of <100% indicating non-adherence. Non-adherence predictors were determined by multiple logistic regressions. HRQOL was evaluated by the European Organization for Research and Treatment of Cancer Quality of Life Questionnaire Core 30 (EORTC QLQ-C30). The difference in the mean HRQOL scores between adherent and non-adherent groups was determined by multivariate analysis of variance.

RESULTS

A total of 89 patients were enrolled, of which 49 (55.1%) were considered non-adherent. The significant predictors of non-adherence were age (adjusted odds ratio [OR] 0.93; CI 0.89-0.98; P = 0.007), presence of nausea and vomiting (OR 5.63; CI 1.25-25.27; P = 0.024), and presence of comorbidities (OR 4.56; CI 1.44-14.40; P = 0.010). Patients who were in the adherent group showed significantly better score in overall HRQOL, F (15, 73) = 2.09, P < 0.02; Pillai's trace = 0.3, partial eta squared = 0.30.

CONCLUSION

Non-adherence to long-term treatment with imatinib among patients with GIST should not be underestimated. Significant predictors of non-adherence among this population are younger age, presence of nausea and vomiting, as well as comorbidities. Patients with good adherence portrayed better HRQOL.

Análise de mutações do domínio BCR-ABL quinase em pacientes com leucemia mielóide crônica refratários ao tratamento com mesilato de imatinibe

Objetivo: A Leucemia Mielóide Crônica (LMC) é um distúrbio clonal de células progenitoras hematopoiéticas, caracterizada por uma translocação recíproca entre os cromossomos 9 e 22, que resulta no gene híbrido BCR-ABL1.Mesmo com o progresso no tratamento da doença permitido pelos inibidores de tirosina quinase, mutações pontuais no domínio desse gene são as principais causas de resistência terapêutica, principalmente ao mesilato de imatinibe. O objetivo desse estudo foi analisar as mutações pontuais de alta resistência em paciente com LMC e sua possível correlação com a resposta ao tratamento. Métodos: Estudo transversal com 58 pacientes com LMC em tratamento com imatinibe e com resposta subótima à terapia. As amostras de sangue foram analisadas por PCR em tempo real usando a química TaqMan® para avaliar as seguintes mutações pontuais: T315I, E255V e Y253H. Resultados: Nenhum dos 58 pacientes apresentou alguma das mutações investigadas. Houve uso irregular da medicação em 16% (n = 9), dos quais 44% (n = 4) relataram uso descontínuo e interrupção por conta própria, e 56% (n = 5) apresentaram intolerância ao tratamento e trocaram de fármaco. Conclusão: A ausência das mutações pontuais nos pacientes portadores de LMC analisados neste estudo demonstrou que a falha na terapia não tem correlação molecular com as mutações analisadas e pode estar relacionada à menores taxas de adesão ao tratamento. Estes achados foram demonstrados em um número considerável de pacientes avaliados, apontando a necessidade da edução sobre a importância de seguir as recomendações sobre seu tratamento para evitar complicações futuras.

[A survey among family doctors on care reality of patients under oral tyrosine kinase inhibitor therapies]

INTRODUCTION

Oral tyrosine kinase inhibitor (TKI) therapies are becoming increasingly more important in the treatment of malignant diseases. Monitoring with focus on adherence, side effects and interactions poses new challenges for medical care. The role and capabilities of family doctors in the care of TKI patients are yet unclear and should be uncovered in a nationwide survey.

METHODS

From April to July 2016, 3,000 family doctors in Germany were asked to complete a written questionnaire regarding their capabilities for co-supervision of TKI patients.

RESULTS

The response rate was 18% (n=553). The peak age was between 50 and 60 years. 81% were specialists in general medicine, 14% specialists in internal medicine and 5% general practitioners. 98% cared for no or less than 10 TKI patients per quarter. Knowledge of side effects and interaction potential of TKIs was low in over 90%. 83% preferred monitoring by the treating oncologist and 93% felt uncertain about treatment monitoring. The control of adherence was of little importance in 66%. The number of treated TKI patients had a significant impact on knowledge and opportunities for treatment monitoring. There was a significant correlation between knowledge about TKIs and confidence in treatment monitoring. In general, younger doctors tended to be more confident in treatment monitoring, and specialists in internal medicine tended to have more knowledge than specialists in general medicine general practitioners and general practitioners.

DISCUSSION

Currently, the low number of TKI patients, little knowledge about TKI, and the desire for specialist care are limiting the possibilities of co-caring for TKI patients by family doctors.

CONCLUSION

Although family doctors are generally motivated to care for tumor patients, routine treatment controls of TKI patients conducted by family doctors seem hardly possible at the moment and should currently remain with the specialist.

Lymphoblastic predominance of blastic phase in children with chronic myeloid leukaemia treated with imatinib: A report from the I-CML-Ped Study

BACKGROUND

Chronic myeloid leukaemia (CML) is a rare disease in children. The frequency and outcome of children evolving to accelerated phase (AP) or blastic phase (BP) under treatment with imatinib is unknown. The aim of the current study is to assess the incidence of progression from CML in chronic phase with imatinib frontline in a paediatric setting and describe the management and outcome of these patients.

PATIENTS AND METHODS

In the I-CML-Ped Study database (www.clinicaltrials.gov, #NCT01281735), 19 of 339 paediatric patients in chronic phase treated with imatinib in the frontline evolved to CML-AP or CML-BP.

RESULTS

With a median follow-up of 38 months (range: 2-190 months), the cumulative incidence of progression at 1 and 3 years was 3% (confidence interval [CI] 95%: 1-5%) and 7% (CI 95%: 4-11%), respectively. We observed a large predominance of lymphoid-BP (70%) over myeloid-BP (30%) with imatinib in frontline therapy. Sixteen patients underwent haematopoietic stem cell transplantation, and eight were treated with a tyrosine kinase inhibitor after transplant. Only the transplanted patients are alive. The 5-year overall survival rate of children with CML-AP/BP is 44%, with no statistical difference between the lymphoid-BP and myeloid-BP outcome.

CONCLUSION

Children evolving to AP or BP under treatment with imatinib have a very poor prognosis with an overall survival under 50%, much worse than children with advanced phase at diagnosis.

Filling the gaps of patient information and comprehension

PURPOSE OF REVIEW

This review describes the gaps in cancer patient information and comprehension and provides examples of interventions aimed at filling the gaps.

RECENT FINDINGS

Despite the technologically advanced era, unmet information needs remain a challenge in current cancer care, even though the beneficial effects of adequate information provision are well described.It starts with the basics of patient-physician communication and information exchange. Barriers are described both patient and physician-specific. For patients to comprehend and recall information correctly, information provision should be tailored to the specific patient in content, as well as in readability level. Tailored content based on bidirectional and iterative information exchange (i.e., patients reported outcomes, followed by specific/personalized feedback) is of focus in the current development of interventions aimed at meeting the gaps. However, the effects of such interventions are not overwhelming and the explanation could be multifactorial.

SUMMARY

Unmet informational needs are still a gap in current cancer care. The effect of eHealth interventions is not yet well established. Key is to educate patients and (future) healthcare professionals in eHealth. Future research should focus on identifying what kind of interventions are able to fill the gaps.

Horn of plenty: Value of the international registry for pediatric chronic myeloid leukemia

Chronic myeloid leukemia (CML) in minors is a rare disease which can be effectively treated by tyrosine kinase inhibitors (TKIs) since the year 2000. A majority of pediatricians will encounter one or two CML patients in the course of their careers and will typically have to rely on written information along with their own intuition to provide care. Knowledge of response to TKIs and of age-specific side effects has an impact on the design of pediatric CML trials in many ways aiming to contribute toward greater predictability of clinical improvements. Information from a registry on a rare disease like CML offers the enormous benefit of enabling treating physicians to interact and share their collective experience. The International Registry on Pediatric CML (IR-PCML) was founded at Poitiers/France almost 10 years ago. Since then, the number of collaboration centers and in parallel of registered patients continuously increased (> 550 patients as of December 2019). Ideally, from a given treatment center in a country data are transferred to a national coordinator who interacts with the IR-PCML. In the sense of quality assurance, the registry can offer dissemination of knowledge on state-of-the-art diagnostics (including reference appraisal), optimal treatment approaches, and follow-up procedures within a network that is exerting its strength via participation. With continuous growth during the recent years, very rare subgroups of patients could be identified (e.g., CML diagnosed at age < 3 years, children presenting with specific problems at diagnosis or during course of treatment) which had not been described before. Publications coming from the IR-PCML disseminated this useful information derived from patients who robustly participate and share information about their disease, among themselves and with their caregivers and clinicians. Patient input driving the collection of data on this rare leukemia is the basis for the considerable success of bringing new therapeutics into clinical use.

Adherence to tyrosine kinase inhibitors among adult chronic myeloid leukemia patients in a Malaysia hospital

Background Tyrosine kinase inhibitors have been demonstrated to improve the survival of patients with chronic myeloid leukaemia. However, medication adherence is vital for patients on chronic treatment. Objective The objective of the current study was to evaluate response to treatment, adherence by patients to tyrosine kinase inhibitors and factors associated with adherence and response. Setting A haematology clinic in a regional referral hospital in Malaysia. Method Patients aged ≥ 13 years who had been on imatinib or nilotinib for ≥ 12 months were included in this cross-sectional study. An optimal response was defined as the achievement of major molecular response at 12 months of treatment. Patient medication adherence was determined using the average medication possession ratio based on the dispensing records. The patients were considered adherent if the medication possession ratio was > 90%. Multiple logistic regression was performed to evaluate the factors associated with adherence. The association of adherence with molecular response was analysed by univariate logistic regression. Main outcome measure The primary outcome measures were the proportion of patients who achieved optimal response and the medication possession ratio. Results A total of 151 patients were screened, and 71 patients were included. Twenty-eight patients (39%) achieved major molecular response at 12 months of treatment. The median time to achieve this was 15.5 months (an interquartile range of 15). The mean medication possession ratio for imatinib and nilotinib was 0.94 (± 0.14) and 0.96 (± 0.10), respectively, but this difference was without statistical significance (t  =  - 0.517, p  =  0.610). Nausea and vomiting (odds ratio [OR] of 0.25, 95% confidence interval [CI]: 0.07-0.83, p  =  0.023) and disease phase at diagnosis (OR of 0.20, 95% CI 0.04-1.06, p  =  0.059) were associated with patient adherence. An association was not found between patient adherence and molecular response (OR of 1.03, 95% CI 0.35-3.09, p  =  0.956). Conclusion The patients in this study demonstrated a relatively deep molecular response and optimal adherence. Nevertheless, one fourth of them were noncompliant with imatinib. Therefore, active interventions are warranted to prevent treatment-associated adverse events and improve adherence.

Response and Adherence to Nilotinib in Daily practice (RAND study): an in-depth observational study of chronic myeloid leukemia patients treated with nilotinib

Introduction

This comprehensive observational study aimed to gain insight into adherence to nilotinib and the effect of (non)adherence on exposure (C_min) and treatment outcomes.

Methods

Chronic myeloid leukemia (CML) patients using nilotinib were followed for 12 months. Adherence was measured by Medication Event Monitoring System (MEMS), pill count, and Medication Adherence Report Scale (MARS-5). Nilotinib C_min and patient-reported outcomes (i.e., quality of life, side effects, beliefs, satisfaction) were measured at baseline, 3, 6, and 12 months.

Results

Sixty-eight patients (57.5 ± 15.0 years, 49% female) participated. Median adherence to nilotinib (MEMS and pill count) was ≥ 99% and adherence < 90% was rare. Self-reported nonadherence (MARS-5) increased in the first year of treatment to a third of patients. In line with the strong beliefs in the necessity of taking nilotinib, forgetting to take a dose was more prevalent than intentionally adjusting/skipping doses. Nilotinib C_min were generally above the therapeutic target in 95% of patients. Patients reported a variety of side effects, of which fatigue was most frequent. The mean C_min was higher in patients who reported severe itching and fatigue. The overall 1-year MMR rate ranged from 47 to 71%.

Conclusion

Substantial nonadherence (< 90%) to nilotinib was rare and nilotinib C_min were generally above the therapeutic target. Lack of response in our group of patients was not related to nonadherence or inadequate C_min. Nevertheless, a considerable number of patients experienced difficulties in adhering to the twice daily fasted dosing regimen, emphasizing the importance of continuous support of medication adherence in CML.

Clinical trial registration

NTR3992 (Netherlands Trial Register, www.trialregister.nl)

Electronic supplementary material

The online version of this article (10.1007/s00228-020-02910-3) contains supplementary material, which is available to authorized users.

Current Strategies and Future Directions to Achieve Deep Molecular Response and Treatment-Free Remission in Chronic Myeloid Leukemia

The treatment of chronic myeloid leukemia (CML) has been radically changed by the approval of tyrosine kinase inhibitors (TKIs), which target BCR-ABL1 kinase activity. CML is now managed as a chronic disease requiring long-term treatment and close molecular monitoring. It has been shown that in a substantial number of patients who have achieved a stable deep molecular response (DMR), TKI treatment can be safely discontinued without loss of response. Therefore, treatment-free remission (TFR), through the achievement of a DMR, is increasingly regarded as a feasible treatment goal in many CML patients. However, only nilotinib has approval in this setting and a number of controversial aspects remain regarding treatment choices and timings, predictive factors, patient communication, and optimal strategies to achieve successful TFR. This narrative review aims to provide a comprehensive overview on how to optimize the path to DMR and TFR in patients with CML, and discusses recent data and future directions.

A review of factors influencing non-adherence to oral antineoplastic drugs

PURPOSE

Adherence to oral antineoplastic drugs is a complex phenomenon, and knowledge about the reasons that people with cancer do not adhere to their prescriptions is essential to inform adherence-related support in clinical and research contexts. This study aims to provide an up-to-date summary of the key reasons for non-adherence to oral antineoplatic drugs (OAD) in people with cancer.

METHODS

Electronic databases Medline, Embase, Emcare, and PsychINFO were searched for systematic reviews and studies published between January 2010 and March 2018. Data was analyzed and extracted by two independent reviewers.

RESULTS

Three systematic reviews and two studies were included in the review. Key factors for non-adherence were classified as either modifiable or non-modifiable factors. Side effects, forgetfulness, and poor knowledge about OAD were identified as modifiable factors while co-payment, age, regimen complexity. and time since diagnosis were identified as non-modifiable factors. Most of the included studies focused on breast cancer and chronic myeloid leukemia (CML) patients. Low methodological quality and different adherence cut-off rates were observed in the included literature.

CONCLUSIONS

More research with rigorous methodology and diverse cancer types is needed to increase evidence on the reasons for OAD non-adherence. However, findings from this study may serve to aid in drafting guidelines and suitable interventions for adherence-related support to OAD users.

Patients' organizations in rare diseases and involvement in drug information: Illustrations with LMC France, the French Association of Chronic Myeloid leukemia

There are few areas in medicine in which patient-parent advocacy groups play such a central and prominent role as in the field of rare diseases. As illustrated by the French Association of Chronic Myeloid Leukemia (LMC France), its contribution is not only focused on its role as participants or key informant related to clinical studies but also on drug information and drug safety. The discovery of tyrosine kinase inhibitors against the BCR-ABL1 oncogenic fusion protein has revolutionized the management of CML, becoming a chronic illness rather than a life-threatening disease. Because ensuring ongoing well-being requires some knowledge, LMC France has built, in synergy with healthcare professionals from its scientific council, a CML-specific, patient-friendly knowledge base including resources and knowledge related to drug information (drug development, generics, pharmacovigilance) and drug safety using several educational tools such as videos, CML support, and CML drug sheets. To disseminate more largely, an e-university learning for regional key informants from LMC France and also CML patients and their caregivers was launched, including a large resources related to drug information and drug safety in synergy with hematologists and clinical pharmacologists.

Adherence to Adjuvant Imatinib Therapy in Patients with Gastrointestinal Stromal Tumor in Clinical Practice: A Cross-Sectional Study

BACKGROUND

Adherence to imatinib therapy has been significantly associated with disease progression and direct medical costs in gastrointestinal stromal tumor (GIST) patients. However, adherence to oral anticancer drugs is frequently hindered by the influence of various factors. The aim of this study was to evaluate the prevalence of imatinib adherence and its influencing factors among GIST patients in the adjuvant setting.

METHODS

Adherence of GIST patients (receiving imatinib for ≥1 month) was assessed using the 8-item Morisky Medication Adherence Scale (MMAS), with a score <8 indicating nonadherence. Quality of life and social support were evaluated by the European Organization for Research and Treatment of Cancer Quality of Life Questionnaire C30 (EORTC QLQ C30) and Social Support Rating Scale (SSRS). Factors associated with nonadherence were identified by multivariate logistic regression analysis. Imatinib plasma concentrations were determined and compared between adherent and nonadherent groups.

RESULTS

A total of 158 GIST patients were enrolled, 92 (58.2%) patients were considered nonadherent. Intentional nonadherence, especially feeling hassled by treatment plan (34.2% of patients), was common. In the multivariate logistic regression analysis, gender (OR 2.68, 95% CI 1.33-5.41; p = 0.0058), place of residence (OR 3.20, 95% CI 1.39-7.35; p = 0.0061), and global health status (OR 1.02, 95% CI 1.00-1.04; p = 0.0378) were significantly associated with nonadherence. Moreover, imatinib plasma concentrations in nonadherent patients were significantly lower than that in the good adherence group (p = 0.0338).

CONCLUSIONS

Poor adherence to imatinib is a notable problem in Chinese GIST patients in the adjuvant therapy setting. The predominant indicators of nonadherence in this study were gender (female), living in a rural area, and harboring a low global health status score. These indicators may aid clinicians in determining where increased efforts in promoting adherence may be beneficial.

Maximizing the effectiveness of oral therapies in lymphoid cancers: research gaps and unmet needs

Oral therapies have become a common treatment choice for several lymphoid cancers. While therapeutic efficacy and patient preference for this therapy type have been reported, there is a lack of knowledge about its effectiveness for lymphoma in clinical practice, particularly in regard to the effects of medication nonadherence. While studies of oral medications in other diseases have shown that adherence is a major factor in outcomes and costs, there is scant research investigating adherence specifically in lymphoma patients, who face unique challenges in their diseases and treatments. To address the limited data available, we constructed a conceptual model and highlighted key opportunities for future research to better elucidate oral therapy adherence in lymphoma. This research will hopefully improve understanding and efficacy of oral treatment for lymphoma patients, while also informing other cancers utilizing oral therapies currently and in the future.

Differences in treatment and monitoring of chronic myeloid leukemia with regard to age, but not sex: Results from a population-based study

There are established guidelines for treatment and monitoring of chronic myeloid leukemia (CML) but little is known about routine care. Data on ICD-10 codes as well as prescribed medications were available for 10.5 million patients in the statutory health insurance system in Bavaria for the years 2010 to 2016. Also, data on the molecular and cytogenetic monitoring were integrated. A total of 1714 adult patients with CML were observed. Only 50.8% received more than 67.5 daily doses per quarter year (target: 91.5) while 18.2% did not receive any tyrosine kinase inhibitor (TKI). The median number of daily doses was at least 80 doses per quarter year for all age groups in men, but decreased to 62 doses in elderly women. With this exception, no differences between men and women were observed. The percentage of patients without any TKI increased with age. The median number of molecular examinations was 3.54 independent of age and sex. Even in a highly developed country, still a considerable number of patients with CML seem to not receive adequate treatment, whereas molecular monitoring can be considered satisfactory.

Comparison of BCR-ABL Transcript Variants Between Patients With Chronic Myeloid Leukaemia and Leukaemia Cell Lines

BACKGROUND/AIM

Chronic myeloid leukaemia (CML) is a myeloproliferative disorder characterized by the presence of breakpoint cluster region-Abelson murine leukemia (BCR-ABL1) gene fusion as a hallmark that is expressed as two major transcripts b2a2 and b3a2. The aim of this study was to compare the BCR-ABL transcripts in the blood cells of patients with CML, and in chemoresistant and chemosensitive CML cell lines to validate their use as a good method to elucidate CML biology.

MATERIALS AND METHODS

Twelve patients with CML and CML cell lines (K562, K562-LUCENA and FEPS) were analyzed by real-time polymerase chain reaction to evaluate gene expression of BCR-ABL transcripts.

RESULTS

All patients had the same expression levels of b2a2 and b3a3 transcripts, however, CML cell lines presented only b3a2 expression. There were no significant differences in absolute b3a2 expression between patients and CML cell lines.

CONCLUSION

CML cell lines provide a good in vitro alternative in that they have the same BCR-ABL expression as patients.

How I treat chronic myeloid leukemia in children and adolescents

Evidence-based recommendations have been established for treatment of chronic myeloid leukemia (CML) in adults treated with tyrosine kinase inhibitors (TKIs), but the rarity of this leukemia in children and adolescents makes it challenging to develop similar recommendations in pediatrics. In addition to imatinib, which was approved for pediatric CML in 2003, the second-generation TKIs dasatinib and nilotinib were recently approved for use in children, expanding the therapeutic options and pushing allogeneic stem cell transplantation to a third-line treatment of most pediatric cases. Yet, without sufficient data on efficacy and safety specific to pediatric patients, the selection of a TKI continues to rely on clinical experience in adults. Here, we present 4 case scenarios highlighting common yet challenging issues encountered in the treatment of pediatric CML (suboptimal response, poor treatment adherence, growth retardation, and presentation in advanced phases). Limited experience with very young children, the transition of teenagers to adult medicine, and the goal of achieving treatment-free remission for this rare leukemia are additional significant obstacles that require further clinical investigation through international collaboration.