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Merck (MRK) to Withdraw a Gastric Cancer Indication for Keytruda

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Merck (MRK - Free Report) is set to withdraw the indication of third or later-line treatment of advanced gastric cancer for its blockbuster immuno-oncology drug, Keytruda, in the United States. Following a discussion with the FDA the company has planned to initiate the withdrawal in six months.

We remind investors that Keytruda was granted accelerated approval in 2017 as monotherapy for treating recurrent locally advanced or metastatic gastric or gastroesophageal junction (GEJ) adenocarcinoma whose tumors express PD-L1 (combined positive score of 1 or more) in patients whose disease has progressed following two or more prior lines of chemotherapies.

The continued approval for this indication was contingent upon results of a phase III study as a post-marketing requirement. This late-stage study did not meet its primary endpoint of overall survival benefit in the recurrent gastric cancer indication.

As a result, Merck announced voluntary withdrawal of the drug for the aforementioned indication following evaluation by the Oncologic Drugs Advisory Committee and in consultation with the FDA. However, the drug’s accelerated approval for first-line treatment of gastric cancer in combination with Roche’s (RHHBY - Free Report) Herceptin and chemotherapies, granted earlier this year, remains unaffected. This withdrawal does not impact any other approved indications for the drug.

Meanwhile, the company is also developing the drug for treating gastric cancer in different treatment settings, including first-line, neoadjuvant and adjuvant treatment setting.

Shares of Merck have declined 4.7% so far this year against the industry’s increase of 8.3%.

Zacks Investment ResearchImage Source: Zacks Investment Research

Keytruda is a key top-line driver for Merck as it is approved for treatment of many cancers globally. The drug generated sales of $3.9 billion in the first quarter of 2021, up 16% year over year.

Keytruda is continuously growing and expanding into new indications and markets globally. In fact, the Keytruda development program is also progressing well and the drug is being studied for more than 30 types of cancer in more than 1500 studies, including more than 1050 combination studies. Merck has collaborated with several companies including Amgen (AMGN - Free Report) , Glaxo (GSK - Free Report) and Pfizer, separately, for the evaluation of Keytruda in combination with other regimens.

With continued label expansions and several ongoing label-expansion studies, the drug has a strong growth prospect. However, Merck is excessively dependent on the drug.

Zacks Rank

Merck currently carries a Zacks Rank #4 (Sell).

You can see the complete list of today’s Zacks #1 Rank (Strong Buy) stocks here.

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