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FDA Grants Accelerated Approval to Ipilimumab in Combination with Nivolumab for MSI-H or dMMR mCRC

Approval is based on data from CHECKMATE 142 study
13 Jul 2018
Gastrointestinal cancers;  Cancer Immunology and Immunotherapy

On 10 July 2018, the US Food and Drug Administration (FDA) granted accelerated approval to ipilimumab (YERVOY, Bristol-Myers Squibb Company Inc.) for use in combination with nivolumab (OPDIVO) for the treatment of patients 12 years of age and older with microsatellite instability-high (MSI-H) or mismatch repair deficient (dMMR) metastatic colorectal cancer (mCRC) that has progressed following treatment with a fluoropyrimidine, oxaliplatin, and irinotecan.

This new use has also been added to the OPDIVO labelling. Nivolumab received accelerated approval for this indication as a single agent on 31 July 2017.

The approvals were based on data from Study CA209142 (CHECKMATE 142; NCT02060188), a multicentre, non-randomised, multiple parallel-cohort, open-label study that enrolled 82 patients with dMMR or MSI-H mCRC with disease progression during or following fluoropyrimidine-, oxaliplatin-, and irinotecan-based chemotherapy.  Assessment of dMMR or MSI-H tumour status was determined by local laboratories. All patients received ipilimumab 1 mg/kg by intravenous (i.v.) infusion and nivolumab 3 mg/kg i.v. every 3 weeks for 4 doses, followed by nivolumab 3 mg/kg i.v. as a single agent every 2 weeks, until unacceptable toxicity or radiographic progression.  

Among these 82 patients, the overall response rate (ORR) as assessed by an independent radiographic review committee using RECIST v1.1 was 46% (95% CI: 35,58), with 3 complete and 35 partial responses, and 89% of responding patients had response durations of ≥ 6 months. The ORR was higher than that observed in a separate cohort of 58 patients with dMMR/MSI-H mCRC with disease progression on or following fluoropyrimidine-, oxaliplatin-, and irinotecan-based chemotherapy who received nivolumab alone, with an ORR of 28% with 67% having response durations of ≥ 6 months.

The most common adverse reactions (≥20%) in those receiving ipilimumab and nivolumab are fatigue, diarrhoea, pyrexia, musculoskeletal pain, abdominal pain, pruritus, nausea, rash, dyspnoea, decreased appetite, and vomiting.

The recommended dosage regimen for this indication is nivolumab 3 mg/kg i.v. followed by ipilimumab 1 mg/kg every 3 weeks for 4 doses, then nivolumab 240 mg every 2 weeks.

Efficacy for adolescent patients (12 years and older) with MSI-H or dMMR mCRC is extrapolated from the results in the respective adult population.

Full prescribing information for YERVOY is available here and for OPDIVO here.

FDA granted ipilimumab and nivolumab breakthrough therapy designations for this indication and granted priority review to these applications. As a condition of accelerated approval, further studies are required to confirm clinical benefit of ipilimumab and nivolumab for this indication.

Healthcare professionals should report all serious adverse events suspected to be associated with the use of any medicine and device to FDA’s MedWatch Reporting System.

Last update: 13 Jul 2018

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