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Reimbursement Recommendations for Cancer Drugs Supported by Phase II Evidence in Canada.

Background: Phase ii data are increasingly being used as primary evidence for public reimbursement for oncologic drugs. We compared the frequency of reimbursement recommendations for phase ii and phase iii submissions and assessed for variables associated with a positive or conditional recommendation. Methods: We identified submissions made to the pan-Canadian Oncology Drug Review's Expert Review Committee (perc), of the Canadian Agency for Drugs and Technologies in Health, July 2011 to July 2019, that were supported only by phase ii data. We identified variables within the perc's deliberative framework, including clinical and economic factors, associated with the final reimbursement recommendation. We conducted a multivariable analysis with logistic regression for these variables: feasibility of phase iii study, hematologic indication, and unmet need. Results: We identified 139 submissions with a perc final recommendation. In 27 instances (19%), the submission had only phase ii evidence, and a positive recommendation was issued for 63% of them (the positive recommendation rate was 82% for submissions with phase iii evidence). Clinical benefit (p < 0.001), unmet need (p = 0.047), and patient alignment (p = 0.015) were associated with a positive recommendation. If a future phase iii study was deemed feasible for submissions with only phase ii evidence, then in univariable (p = 0.040) and multivariable analysis (p = 0.024), the perc was less likely to recommend reimbursement (odds ratio: 0.132). Conclusions: Although more than half the oncologic submissions with phase ii data were recommended for public reimbursement, compared with submissions having phase iii data, they were less likely to be recommended. A positive or conditional recommendation was more likely if clinical benefit and alignment with patient values was demonstrated. The perc was less likely to recommend reimbursement for submissions with phase ii evidence if a phase iii trial was deemed possible.