FDA approves pralsetinib for lung cancer with RET gene fusions

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The Food and Drug Administration granted accelerated approval to pralsetinib for adult patients with metastatic RET fusion-positive non-small cell lung cancer (NSCLC) as detected by an FDA approved test.

FDA also approved the Oncomine Dx Target (ODxT) Test as a companion diagnostic for pralsetinib.

Efficacy was investigated in a multicentre, open-label, multi-cohort clinical trial (ARROW, NCT03037385) in patients whose tumours had RET alterations.

Identification of RET gene alterations was prospectively determined in local laboratories using either next generation sequencing, fluorescence in situ hybridisation, or other tests.

The main efficacy outcome measures were overall response rate (ORR) and response duration determined by a blinded independent review committee using RECIST 1.1.

Efficacy for RET fusion-positive NSCLC was evaluated in 87 patients previously treated with platinum chemotherapy.

The ORR was 57% (95% CI: 46%, 68%); 80% of responding patients had responses lasting 6 months or longer.

Efficacy was also evaluated in 27 patients who never received systemic treatment.

The ORR for these patients was 70% (95% CI: 50%, 86%); 58% of responding patients had responses lasting 6 months or longer.

The most common adverse reactions, including laboratory abnormalities, (≥25%) were increased aspartate aminotransferase (AST), decreased haemoglobin, decreased lymphocytes, decreased neutrophils, increased alanine aminotransferase (ALT), increased creatinine, increased alkaline phosphatase, fatigue, constipation, musculoskeletal pain, decreased calcium, hypertension, decreased sodium, decreased phosphate, and decreased platelets.

The recommended pralsetinib dose is 400 mg orally once daily. Pralsetinib is taken on an empty stomach (no food intake for at least 2 hours before and at least 1 hour after taking pralsetinib).

View full prescribing information for pralsetinib.


Source: FDA

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