Αρχική World News FDA Approves Pembrolizumab Combination for the First-Line Treatment of Cervical Cancer

FDA Approves Pembrolizumab Combination for the First-Line Treatment of Cervical Cancer

On 13 October 2021, the US Food and Drug Administration (FDA) approved pembrolizumab (Keytruda, Merck) in combination with chemotherapy, with or without bevacizumab, for patients with persistent, recurrent or metastatic cervical cancer whose tumours express PD-L1 combined positive score (CPS) ≥1, as determined by an FDA-approved test.

FDA also granted regular approval to pembrolizumab as a single agent for patients with recurrent or metastatic cervical cancer with disease progression on or after chemotherapy whose tumours express PD-L1 CPS ≥1 as determined by an FDA-approved test. In June 2018, FDA had granted accelerated approval to this indication with the companion diagnostic, PD-L1 IHC 22C3 pharmDx (Dako North America Inc.).

KEYNOTE-826 (NCT03635567), a multicentre, randomised, double-blind, placebo-controlled study, examined pembrolizumab with paclitaxel and cisplatin or paclitaxel and carboplatin, with or without bevacizumab. The study enroled 617 patients with persistent, recurrent, or first-line metastatic cervical cancer who had not been treated with chemotherapy. Patients were enrolled irrespective of PD-L1 expression status. Patients were randomised (1:1) to one of two treatment groups: pembrolizumab 200 mg plus chemotherapy with or without bevacizumab or placebo plus chemotherapy with or without bevacizumab. Pembrolizumab was continued until disease progression, unacceptable toxicity, or 24 months of treatment.

The main efficacy outcome measures were overall survival (OS) and progression-free survival (PFS) assessed by the investigator using RECIST v1.1, modified to follow a maximum of 10 target lesions and a maximum of 5 target lesions per organ. Additional outcome measures were overall response rate (ORR) and duration of response (DoR).

For patients with tumours expressing PD-L1 CPS ≥1 (N=548), the median OS was not reached (95% confidence interval [CI] 19.8, NR) in the pembrolizumab arm and was 16.3 months (95% CI 14.5, 19.4) in the placebo arm (hazard ratio [HR] 0.64; 95% CI 0.50, 0.81; 1-sided p-value = 0.0001). Median PFS was 10.4 months (95% CI 9.7, 12.3) in the pembrolizumab arm and 8.2 months (95% CI 6.3, 8.5) in the placebo arm (HR 0.62; 95% CI 0.50, 0.77; 1-sided p-value < 0.0001).

The ORRs were 68% (95% CI 62, 74) and 50% (95% CI 44, 56) with median DoR of 18.0 and 10.4 months in the pembrolizumab and placebo arms, respectively.

The most common adverse reactions (≥20%) in patients treated with pembrolizumab, chemotherapy, and bevacizumab were peripheral neuropathy, alopecia, anaemia, fatigue/asthenia, nausea, neutropenia, diarrhoea, hypertension, thrombocytopenia, constipation, arthralgia, vomiting, urinary tract infection, rash, leukopenia, hypothyroidism, and decreased appetite.

The recommended pembrolizumab dose is 200 mg every 3 weeks or 400 mg every 6 weeks until disease progression, unacceptable toxicity, or up to 24 months.

Full prescribing information for Keytruda is available here.

This review was conducted under Project Orbis, an initiative of the FDA’s Oncology Center of Excellence (OCE). Project Orbis provides a framework for concurrent submission and review of oncology drugs among international partners. For this review, FDA collaborated with the Australian Therapeutic Goods Administration, Health Canada, and Switzerland’s Swissmedic. The application reviews are ongoing at the other regulatory agencies.

This review used the Assessment Aid, a voluntary submission from the applicant to facilitate the FDA’s assessment. The FDA approved this application 4 months ahead of the FDA goal date.

This application was granted priority review designation.

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.

For assistance with single-patient INDs for investigational oncology products, healthcare professionals may contact OCE’s Project Facilitate.

KEYNOTE-826 findings were presented at the ESMO Congress 2021 and simultaneously published in The New England Journal of Medicine.

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