Influencing factors of cardiorespiratory fitness in allogeneic stem cell transplant candidates prior to transplantation

Tripartite prehabilitation of patients with acute myeloid leukaemia and high-risk myelodysplastic syndromes during intensive chemotherapy before allogeneic haematopoietic stem cell transplantation (COHABILIT): protocol for an innovating prospective multicentre study

OBJECTIVES

Acute myeloid leukaemia (AML) and high-risk myelodysplastic syndromes (MDS) are often treated with intensive chemotherapy followed by allogeneic haematopoietic stem cell transplantation (allo-HSCT). The pretransplant treatment results in a general deterioration of the patient's health and quality of life. Furthermore, allo-HSCT can be responsible for significant toxicity with risks of graft-versus-host disease (GvHD). Developing strategies to prevent physical deconditioning, undernutrition and psychological distress could help maintain a satisfactory general state of health before transplantation and thus limit these deleterious effects. This protocol evaluates the feasibility and adherence to a personalised prehabilitation programme, which can be modulated and assisted by connected objects, provided from the diagnosis to the allo-HSCT.

METHODS AND ANALYSIS

This multicentre interventional study will include 50 patients treated for AML or high-risk MDS with intensive chemotherapy and eligible for allo-HSCT. The intervention consists of a coached, supervised or self-directed physical activity programme, organised during the hospitalisation phases and periods at home. At the same time, patients will receive a weekly dietary follow-up. The whole intervention is controlled and modulated through the use of a dedicated application and connected objects allowing adaptation and individualisation. The rate of participation in the prescribed physical activity sessions will assess the feasibility of this study. In addition, the evolution of physical capacities (Short Physical Performance Battery, grip and quadriceps strengths), psychosocial parameters (Functional Assessment of Cancer Therapy - Leukaemia, Functional Assessment of Cancer Therapy - Fatigue, subjective well-being, Hospital Anxiety and Depression Scale, self-efficacy, Coach-Athlete Relationship Questionnaire, interviews) and clinical status (weight, lean body mass, survival rate, number of infections, days of hospitalisation, GvHD) will be evaluated.

ETHICS AND DISSEMINATION

The study procedures have been approved by the National Ethics Committee (21.00223.000003). Consent is given in person by each participant. The information collected on the participants contains only a non-identifiable study identifier. The results of this protocol will be published in a scientific paper and communicated to the medical staff of the medical centre.

TRIAL REGISTRATION NUMBER

NCT03595787.

Left and right ventricular global longitudinal strain assessment together with biomarker evaluation may have a predictive and prognostic role in patients qualified for hematopoietic stem cell transplantation due to hematopoietic and lymphoid malignancies - a pilot study description

The hematopoietic stem cell transplantation (HSCT) procedure is considered a cardiovascular burden. This is due to the potentially cardiotoxic cytostatic agents used before and the risks associated with peri-transplant procedures. We designed a pilot study to determine the clinical utility of the new ST2 marker; furthermore, we routinely assessed cardiac parameters in HSCT recipients. Based on previous cardio-oncology experience in lung and prostate cancer, we can confirm the prognostic and predictive value of classic cardiac biomarkers and modern echocardiography parameters such as global longitudinal strain of the left and right ventricle. After conducting this pilot study we can create a predictive and prognostic model for patients undergoing HSCT. This will greatly enrich our clinical practice, especially in treating older people.

Prospective analysis of the attendance behaviour of the participants of a facilitated support group for patients after allogeneic hematopoietic cell transplantation

PURPOSE

Support groups might help survivors of allogeneic hematopoietic cell transplantations (HCT) to cope with medical, psychological, and social challenges. The aim of this project was (1) to establish a facilitated post-HCT support group and (2) to assess the participation behaviour.

METHODS

From 11/2013 until 7/2017, all adult patients who had received a HCT at our centre were invited to participate in a professionally facilitated support group. The format of the group was unstructured without any rules regarding regular attendance. The attendance was prospectively minuted by the facilitator. Reasons for non-attendance were assessed by a survey.

RESULTS

During the observation period, 53 group meetings were scheduled. Nine meetings were cancelled because of low attendance. Altogether 23 different patients (F: n=10; M: n=13) and 10 spouses (F: n=9; M: n=1) participated. Median participation was 5 [range 2-11]. With respect to all HCT patients who had the theoretical opportunity to attend, the mean participation rate was 7%. Thirteen patients and four spouses attended more than one meeting. The median count of participations among those participants was 8 [2-32]. The median interval from the first until the last participation was 16 months. The main reason reported for non-participation was the effort to get to the venue of the support group.

CONCLUSIONS

To our knowledge, this is the first analysis on the attendance behaviour of the participants of a support group for HCT survivors. The results provide guidance for the organization of future support groups and indicate what participation rates can be expected and how they might be increased.

Prehabilitative high-intensity interval training and resistance exercise in patients prior allogeneic stem cell transplantation

Physical capacity prior allogeneic stem cell transplantation (allo-HCT) has been shown as a relevant prognostic factor for survival after transplant. Therefore, we evaluated feasibility and preliminary efficacy of a high-intensity interval training (HIIT) and moderate to high-intensity resistance exercise (RE) to increase physical capacity in patient's prior allo-HCT. In this multicentre single arm pilot study, a supervised exercise program was performed twice weekly for 4-12 weeks prior allo-HCT, depending on the individual time remaining. Outcomes were feasibility (recruitment, adherence, safety), physical capacity (cardiorespiratory fitness [VO2peak], muscle strength) and patient reported outcomes (physical functioning, fatigue). Thirty patients were intended, 16 could be included, and 14 completed post intervention assessment (75% male, 55 ± 11 years). The study was stopped early due to a low recruitment rate. Nine patients (64%) reached the initial minimum planned number of eight exercise sessions. Individual adherence was high with 92% for HIIT and 85% for RE. 87% of all performed exercise sessions were completed without complaints and VO2peak increased significantly from 20.4 to 23.4 ml/kg/min. The low recruitment rate suggests that initiation of the intervention concept immediately before allo-HCT is feasible only in a small number of patients. In particular, the timeframe directly prior allo-HCT seems too short for exercise interventions, although the exercise program was designed to improve outcomes in a very short time frame. HIIT and RE were feasible, effective and well accepted by the included patients.

Simultaneous exercise stress cardiac magnetic resonance and cardiopulmonary exercise testing to elucidate the Fick components of aerobic exercise capacity: a feasibility and reproducibility study and pilot study in hematologic cancer survivors

BACKGROUND

Patients treated for hematologic malignancy often experience reduced exercise capacity and increased fatigue; however whether this reduction is related to cardiac dysfunction or impairment of skeletal muscle oxygen extraction during activity is unknown. Cardiopulmonary exercise testing (CPET) coupled with stress cardiac magnetic resonance (ExeCMR), may provide a noninvasive method to identify the abnormalities of cardiac function or skeletal muscle oxygen extraction. This study was performed to determine the feasibility and reproducibility of a ExeCMR + CPET technique to measure the Fick components of peak oxygen consumption (VO2) and pilot its discriminatory potential in hematologic cancer patients experiencing fatigue.

METHODS

We studied 16 individuals undergoing ExeCMR to determine exercise cardiac reserve with simultaneous measures of VO2. The arteriovenous oxygen content difference (a-vO2diff) was calculated as the quotient of VO2/cardiac index (CI). Repeatability in measurements of peak VO2, CI, and a-vO2diff was assessed in seven healthy controls. Finally, we measured the Fick determinants of peak VO2 in hematologic cancer survivors with fatigue (n = 6) and compared them to age/gender-matched healthy controls (n = 6).

RESULTS

Study procedures were successfully completed without any adverse events in all subjects (N = 16, 100%). The protocol demonstrated good-excellent test-retest reproducibility for peak VO2 (intraclass correlation coefficient [ICC] = 0.992 [95%CI:0.955-0.999]; P < 0.001), peak CI (ICC = 0.970 [95%CI:0.838-0.995]; P < 0.001), and a-vO2diff (ICC = 0.953 [95%CI:0.744-0.992]; P < 0.001). Hematologic cancer survivors with fatigue demonstrated a significantly lower peak VO2 (17.1 [13.5-23.5] vs. 26.0 [19.7-29.5] mL·kg-1·min-1, P = 0.026) and lower peak CI (5.0 [4.7-6.3] vs. 7.4 [7.0-8.8] L·min-1/m2, P = 0.004) without a significant difference in a-vO2diff (14.4 [11.8-16.9] vs. 13.6 [10.9-15.4] mLO2/dL, P = 0.589).

CONCLUSIONS

Noninvasive measurement of peak VO2 Fick determinants is feasible and reliable with an ExeCMR + CPET protocol in those treated for a hematologic malignancy and may offer insight into the mechanisms of exercise intolerance in those experiencing fatigue.

Allogeneic hematopoietic cell transplantation in acute myeloid leukemia

Allogeneic hematopoietic cell transplantation (HCT) is a curative treatment modality for select patients with acute myeloid leukemia (AML), functioning as a restorative agent following intensified chemo- and/or radiotherapy and also engendering the disease-directed immunologic threat of graft-versus-leukemia effect. Advancements in conditioning regimen intensity, donor availability, and supportive care have broadened the eligibility for allogeneic HCT, reduced rates of transplant related mortality, and improved outcomes over time. There are still obstacles to transplant in AML, offering opportunities for ongoing discovery, including poor recipient fitness, insufficient donor availability for certain populations, and limited access to care. Relapse remains the most common cause of treatment failure and a high priority area of investigative efforts. Post-transplant maintenance and novel applications of cellular therapeutics are expected to usher in a new era of promise for successful HCT in AML and will aim to overcome the remaining barriers impeding favorable outcomes for these patients.

Rehabilitation Needs for Patients Undergoing CAR T-Cell Therapy

PURPOSE OF REVIEW

Chimeric antigen receptor (CAR) T-cell therapy is a relatively new, innovative treatment strategy to manage refractory hematological cancers, including some types of leukemia, lymphoma, and multiple myeloma. This article outlines the CAR T-cell therapy process, toxicity, and complications, along with an overview of the currently known short- and long-term physical and functional sequelae that will be helpful for general or oncology rehabilitation specialists caring for these patients.

RECENT FINDINGS

There is a dearth of literature on the topic of rehabilitation of patients receiving CAR T-cell therapy. Rehabilitation practices can be extrapolated from the limited functional information on patients who have completed treatment for lymphoma and multiple myeloma. Patients present with cognitive impairment, muscle weakness, reduced exercise capacity, neuropathy, and cancer-related fatigue. Physical activity and rehabilitation programs may be beneficial to address fatigue, psychological symptoms, and quality of life. There is limited rehabilitation research in patients receiving CAR T-cell therapy. These patients may present with general deconditioning and neurological complications which translate to neuromuscular and cognitive impairment that benefit from multidisciplinary rehabilitation intervention prior to, during, and after treatment. Studies measuring the impairments at baseline and evaluation of the impact of rehabilitation practices are much needed to support this.

Cardiac complications associated with hematopoietic stem-cell transplantation

Advances in chemotherapy and supportive therapy have resulted in improved clinical outcomes in patients with hematological malignancies undergoing hematopoietic stem-cell transplantation (HSCT). However, the association between HSCT and early- and late-onset cardiotoxicity remains controversial as these cardiac complications, including acute heart failure and arrhythmia, such as atrial fibrillation, can occasionally be lethal. Although the overall pathophysiology has not been elucidated, initial/salvage chemotherapy before HSCT, such as anthracycline-combined regimens, conditioning regimens, thoracic radiotherapy, and pre-existing personal risk factors, could be associated with an increased risk of cardiac events. Routine monitoring of cardiac function using global longitudinal strain or left ventricular ejection fraction in echocardiogram and serum biomarkers could be an option to detect early changes in cardiac status before irreversible cardiac complications develop. While beta-blockers and angiotensin-converting enzyme inhibitors are commonly used for cardioprotection, their clinical benefit has not been fully established in HSCT-associated cardiotoxicity. In the future, genetic analysis to reveal individual vulnerability to cardiotoxicity and prospective trials assessing the clinical benefit of early interventions, including novel agents such as angiotensin receptor-neprilysin inhibitor, are warranted. Collaboration between oncologists and cardiologists is crucial to establishing a strategy to prevent cardiac complications.

Feasibility of early-commencing group-based exercise in allogeneic bone marrow transplantation: the BOOST study

Increasing evidence supports that individualised exercise is safe and beneficial for adults treated with allogeneic bone marrow transplantation (alloBMT), although this is not part of standard care and no research has investigated group-based interventions. This study aimed to determine safety, feasibility and exploratory effects of a supervised group-based inpatient and subsequent home-based exercise programme in alloBMT. This single-site prospective cohort study included consecutive adults treated with alloBMT for haematological disease. All participants received usual care in addition to the protocolised exercise programme pre-transplant until 60 days post transplant. The primary outcome was feasibility; secondary outcomes included exercise capacity, frailty, health-related quality of life and strength. Consent rate was 100% (n = 42); 83% (n = 35) completed all aspects of the intervention and outcome testing; of those, 83% (n = 29) attended ≥2 group-exercise sessions per week; no adverse events occurred. Emotional well-being significantly improved over time, which may highlight benefits of group-based intervention. Other outcomes significantly declined from pre-BMT to hospital discharge, with some improvement at 60 days post-BMT. Participants with early signs of frailty demonstrated the greatest decline in outcomes. Group-based exercise was safe and feasible; observations from this study highlight the importance of baseline identification of frailty to target intervention at those who need it most.

Health-related quality of life and physical functioning in patients participating in a rehabilitation programme, undergoing non-myeloablative allogeneic haematopoietic stem cell transplantation: Outcomes from a single arm longitudinal study

OBJECTIVE

This study aims to report HRQOL, patient activation and physical functioning of haematological patients, participating in a 6-month multimodal interdisciplinary rehabilitation programme HAPPY, when undergoing non-myeloablative allogeneic haematopoietic stem cell transplantation (NMA-HSCT).

METHODS

A prospective single-arm longitudinal design. Outcomes were collected as part of a feasibility study and included: HRQOL (EORTC QLQ-C30), patient activation measure (PAM), cardiorespiratory capacity (VO_2peak ), leg extensor power, lean body mass, measured pre-NMA-HSCT at 3-, 6- and 12-month follow-up.

RESULTS

Thirty (mean age (SD) 64.1 (6.5)) out of 34 patients participated and 18 completed HAPPY. Outcome measures showed large individual differences of decline and improvement during follow-up. Patients rated HRQOL as good (median 70.8; range 33.3-100). Fatigue, dyspnoea, insomnia and appetite loss mainly remained or worsened. PAM stayed in the upper half of range (median 55.6; range 20.5-84.8) with a trend towards improvement at 12-month follow-up. Physical functioning scores were low [i.e. baseline VO_2peak , men median 1.5 L/min range (1.0-2.9), women 1.0 L/min (0.8-1.4), leg extensor power men 2.1 Watt/kg range (1.3-3.8), women 1.7 Watt/kg (1.3-2.4), lean body mass men 19.5% (17.6-24.9) and women 17.8% (15.3-21.7)].

CONCLUSION

The sustained low level of physical functioning and symptoms 12-month after NMA-HSCT emphasise the need for pre-rehabilitation and long-lasting rehabilitation support in this frail patient group.

Cardiopulmonary performance in allogeneic hematopoietic cell transplantation recipients-evaluation of pre-transplant risk assessments

Cardiopulmonary performance reflects how well different organ systems interact. It is inter alia influenced by body composition, determines patients' quality of life and can also predict mortality. However, it is not yet used for risk prediction prior to allogeneic hematopoietic cell transplantations (alloHCT). Thus, we aimed to examine the predictive power of peak oxygen consumption (VO2peak) as a representative of cardiopulmonary performance and that of body composition before alloHCT to determine overall survival (OS) and non-relapse mortality (NRM) 2 years after transplantation. We also compared it with the predictive power of four commonly-used risk scores: revised Pretransplant Assessment of Mortality (rPAM), Hematopoietic Cell Transplantation-specific Comorbidity Index (HCT-CI), revised Disease Risk Index (rDRI), European Society for Blood and Marrow Transplantation (EBMT). Fifty-nine patients performed a cardiopulmonary exercise test and body composition assessments before alloHCT and were observed for 2 years. Sixteen patients died. VO2peak and most risk scores assessed pre-transplant revealed no association with OS or NRM. Body composition parameters only within univariable analyses. But higher rDRI and the male sex, were associated with shorter OS and higher NRM. We thus propose that the current risk assessments be reconsidered. The predictive value of VO2peak and body composition need further clarification, however.