Months af­ter the FDA sanc­tioned the ap­proval of Roche’s run­ner up check­point in­hibitor Tecen­triq in com­bi­na­tion with Cel­gene’s Abrax­ane for treat­ment naive pa­tients with triple neg­a­tive breast can­cer, Mer­ck’s keynote PD-1 Keytru­da has stum­bled in a late-stage tri­al as the sec­ond or third line of de­fense against the rare, ag­gres­sive form of can­cer.

Pa­tients in the 622-pa­tient tri­al were ei­ther giv­en the block­buster treat­ment or chemother­a­py. The main goal of the study — over­all sur­vival — was not met, Mer­ck said, adding that de­tails will be dis­closed at a lat­er date.

The US drug­mak­er will con­tin­ue to test Keytru­da monother­a­py and in com­bi­na­tion with chemother­a­py in ear­li­er stages of the dif­fi­cult-to-treat dis­ease.

About 10-20% of all breast can­cers are triple-neg­a­tive breast can­cers (TNBCs), which char­ac­ter­is­ti­cal­ly has a high re­cur­rence rate with­in the first five years af­ter di­ag­no­sis. In TNBC pa­tients, the growth of the can­cer is not fu­eled by the hor­mones es­tro­gen and prog­es­terone, or by the HER2 pro­tein, mak­ing it hard to treat.

Roche’s Tecen­triq com­bi­na­tion with Abrax­ane was the first-ever im­munother­a­py to get ap­proval in the first­line TNBC set­ting. The ap­proval was key for the Swiss drug­mak­er that is third-in-line — be­hind Bris­tol-My­ers Squibb and Mer­ck — for the check­point in­hibitor Iron throne. The large drug­mak­er must get ahead of its ri­vals in cru­cial can­cer ar­eas if it wants to hold on to its po­si­tion, as As­traZeneca carves out a niche for its PD-L1 check­point Imfinzi in a sub­set of non-small cell lung can­cer pa­tients.

About 70% of breast can­cers di­ag­nosed in peo­ple with an in­her­it­ed BR­CA mu­ta­tion, par­tic­u­lar­ly BR­CA1, are di­ag­nosed with TNBC. PARP in­hibitors such as As­traZeneca’s Lyn­parza and Pfiz­er’s Talzen­na are al­ready ap­proved for germline BR­CA-mu­tat­ed breast can­cer, and are be­ing in­ves­ti­gat­ed in com­bi­na­tion with check­point in­hibitors for TNBC.

Mean­while, an­ti­body drug con­ju­gates are an­oth­er po­ten­tial treat­ment op­tion for TNBC un­der in­ves­ti­ga­tion.

The FDA late Friday awarded Boehringer Ingelheim the first interchangeability designation for its Humira biosimilar Cyltezo, meaning that when it launches in July 2023, pharmacists will be able to automatically substitute the Boehringer’s version for AbbVie’s mega-blockbuster without a doctor’s input.

The designation will likely give Boehringer, which first won approval for Cyltezo in 2017, the leg up on a crowded field of Humira competitors.

Oyster Point Pharma now has its first FDA-approved product — Tyrvaya. And the biotech has taken a unique route to get there by using an old drug with a storied past.

The New Jersey biotech announced this morning that the FDA has approved their nasal spray product for dry eye disease on Friday — the first nasal spray to be approved for the disease. The product’s active ingredient is 0.03 mg of varenicline, also known as smoking cessation aid Chantix.

Esperion’s executive team spent years insisting that they had found the sweet spot in the market for their cholesterol drug. But that strategy has soured badly, and after struggling to sell its heart disease pill for more than a year, the biotech says it will cut about 40% of its staff over the next few weeks.

The layoffs will take place across the board, from sales and marketing to R&D, CEO Sheldon Koenig told Endpoints News on Monday. While the chief executive declined to elaborate on how many employees will be affected, an SEC filing stated that approximately 170 staffers are on the chopping block.