Systemic oncological treatments in patients with advanced pancreatic cancer: a scoping review and evidence map

Immunotherapy or Targeted Therapy Versus Best Supportive Care for Advanced Gastric Cancer: A Systematic Review and Meta-analysis of Randomized Trials

PURPOSE

To assess the efficacy and safety of non-chemotherapy anticancer drugs (immunotherapy or targeted therapy) compared to best supportive care (BSC) or placebo for the treatment of advanced gastric cancer (GC).

METHODS

Systematic review of randomized controlled trials (RCTs) searching (May 2022) MEDLINE, EMBASE, CENTRAL, Epistemonikos, ClinicalTrials.gov, and PROSPERO. Certainty of evidence was evaluated following GRADE.

RESULTS

Six RCTs included. Targeted therapies likely result in a slight increase in overall survival (OS) (HR 0.84, 95% CI 0.75, 0.93; moderate certainty) and progression-free survival (PFS) (HR 0.52, 95% CI 0.43, 0.62; moderate certainty). Toxicity had a slightly increased risk (RR 1.19, 95% CI 0.95, 1.48; low certainty). Immunotherapy also showed a likely improvement in PFS (HR 0.60, 95% CI 0.49, 0.73; moderate certainty), while toxicity showed a likely higher risk (RR 2.72, 95% CI 1.24, 5.94; moderate certainty). However, benefits in survival translated to time gains of slightly over a month for OS and less than a month for PFS. No data were reported on performance status (PS), hospital admissions, or quality of life (QoL).

CONCLUSIONS

Our study suggests some survival benefits with low toxicity from these treatments, but gains are marginal. Uncertainties persist regarding their impact on QoL and outcomes for patients with poor PS. Caution is advised in treatment selection for advanced GC patients, who should actively participate in decision-making. Future research should include diverse patient populations and assess patient-centered outcomes with consistent comparator groups for BSC.

TRIAL REGISTRATION

The study protocol was registered in OSF ( https://doi.org/10.17605/OSF.IO/7CHX6 ) on 2022-04-01.

How appropriate is treating patients diagnosed with advanced esophageal cancer with anticancer drugs? A multicenter retrospective cohort Spanish study

AIM

To assess the appropriateness of systemic oncological treatments (SOT) provided to patients diagnosed with advanced esophageal cancer (EC) across a group of participating hospitals.

METHODS

Multicenter, retrospective cohort study in five Spanish hospitals including newly confirmed advanced EC cases between July 1, 2014, and June 30, 2016, with a 5-year follow-up.

RESULTS

We identified 157 patients fulfilling the inclusion criteria (median age: 65 years, 85.9% males). Most patients, 125 (79.6%) were treated at least with one active treatment, and 33% received two or more lines of SOT. The 1-, 2- and 5-year overall survival rates were 30.3% [95%CI: 23.8, 38.7], 14.0% [95%CI: 9.3, 21.0], and 7.1% [95% CI: 3.8, 13.1] respectively, and the median survival time 8 months (95% CI: 6, 19) for stages IIIb IIIc and 7 months (95% CI: 5, 9) for stage IV. Clinical stage, receiving more than one line of SOT, and treatment with radiotherapy accelerated the time to death (0.4, 0.9-, and 0.8-times shorter survival respectively, p < 0.05). Better performance status (ECOG < 2) extended survival time by 2.2 times (p = 0.04). Age < 65 years (OR 9.4, 95% CI 3.2, 31.4, p < 0.001), and being treated in one particular hospital (OR 0.2, 95% CI 0.0, 0.8, p < 0.01) were associated with the administration of two or more lines of SOT. Altogether, 18.9% and 9.0% of patients received chemotherapy in the last four and two weeks of life, respectively. Moreover, 2.5% of patients were prescribed a new line of chemotherapy during the last month of life. The proportion of all patients who did not have access to palliative care reached 29.3%, and among those who had access to it, 34.2% initiated it in the last month of life.

CONCLUSION

A high proportion of advanced EC patients receive many treatments not based on sound evidence and they do not benefit enough from palliative care services. The most accepted appropriateness indicators point out that some of the analyzed patients could have been overtreated. This study provides important insights into the quality of care provided to advanced EC, and furthermore, for giving valuable insight and opportunities for improvement.

Treatment with anticancer drugs for advanced pancreatic cancer: a systematic review

BACKGROUND

Patients with advanced pancreatic cancer have a poor prognosis and high burden of cancer-related symptoms. It is necessary to assess the trade-off of clinical benefits and possible harms of treatments with anticancer drugs (TAD). This systematic review aims to compare the effectiveness of TAD versus supportive care or no treatment, considering all patient-important outcomes.

METHODS

We searched PubMed, Embase, Cochrane Library, and Epistemonikos. Two reviewers performed selection, data extraction and risk of bias assessment. We assessed certainty of the evidence using the GRADE approach.

RESULTS

We included 14 randomised controlled trials. Chemotherapy may result in a slight increase in overall survival (MD: 2.97 months (95%CI 1.23, 4.70)) and fewer hospital days (MD: -6.7 (-8.3, -5.1)), however, the evidence is very uncertain about its effect on symptoms, quality of life, functional status, and adverse events. Targeted/biological therapy may result in little to no difference in overall survival and a slight increment in progression-free survival (HR: 0.83 (95%CI 0.63, 1.10)), but probably results in more adverse events (RR: 5.54 (95%CI 1.24, 23.97)). The evidence is very uncertain about the effect of immunotherapy in overall survival and functional status.

CONCLUSIONS

The evidence is very uncertain about whether the benefits of using treatment with anticancer drugs outweigh their risks for patients with advanced pancreatic cancer. This uncertainty is further highlighted when considering immunotherapy or a second line of chemotherapy and thus, best supportive care would be an appropriate alternative. Future studies should assess their impact on all patient-important outcomes to inform patients in setting their goals of care.