GSK bags Tesaro for $5B as it leaps back in­to com­mer­cial on­col­o­gy and beefs up can­cer drug pipeline

Glax­o­SmithK­line has struck a deal to buy Tesaro $TSRO in a $5.1 bil­lion deal that will vault the phar­ma gi­ant in­to the com­mer­cial on­col­o­gy mar­ket as it stakes out a big new role for it­self in the boom­ing can­cer field.

Long dis­cussed af­ter Tesaro man­age­ment put out the word on sev­er­al oc­ca­sions in the past year that it was look­ing to sell the com­pa­ny and its PARP in­hibitor Ze­ju­la, GSK is pay­ing $75 a share, trig­ger­ing an in­stant 60% spike in the stock this morn­ing as in­vestors caught up to the news to­day.

Wait­ing out the ear­ly buzz al­lowed GSK to pick this com­pa­ny up for a rel­a­tive bar­gain. Tesaro start­ed 2018 at $82 a share, but watched its share price slide 42% un­til to­day as an­a­lysts beat them up over their poor sales per­for­mance. In ear­ly 2017, the stock hit a high of $190. That helps ex­plain why Tesaro was nev­er able to suc­ceed at auc­tion­ing the com­pa­ny ear­li­er, when its share price was still in­flat­ed.

Ze­ju­la is one of sev­er­al PARPs to hit the mar­ket af­ter As­traZeneca pi­o­neered the field with the first ap­proval for Lyn­parza, though lit­tle Tesaro has strug­gled to play catch-up along­side Clo­vis and Pfiz­er, which won a re­cent ap­proval for its PARP, ob­tained in the Medi­va­tion buy­out.

It won’t be easy. As­traZeneca and its new part­ners at Mer­ck have poured re­sources in­to the Lyn­parza fran­chise, win­ning block­buster re­turns as they widen their lead over the pack. And the ac­qui­si­tion wasn’t ex­act­ly cheered by GSK in­vestors, who drove the stock down a painful 8% af­ter the news hit.

The ac­qui­si­tion, though, gives Hal Bar­ron’s resur­gent can­cer re­search group un­der Ax­el Hoos a new drug to work with, as GSK pur­sues new in­di­ca­tions in a range of clin­i­cal tri­als aimed at ex­pand­ing its mar­ket pres­ence in on­col­o­gy.

GSK is just now jump­ing back in­to the com­mer­cial can­cer field af­ter strik­ing a deal with No­var­tis to flip its late-stage and mar­ket­ed on­col­o­gy prod­ucts for a port­fo­lio of vac­cines.

The move comes about a year af­ter Bar­ron — who had a leg­endary run at Genen­tech — took the top R&D job at GSK. As he told me ear­li­er this year, his new team — in­clud­ing new BD chief Kevin Sin — was hard at it scour­ing the globe for deals that made sense for the com­pa­ny.

At this point, a weary Tesaro and Ze­ju­la looked un­der­val­ued. And that made it a prime tar­get for the phar­ma com­pa­ny. GSK has been a ma­jor play­er in HIV and vac­cines, but its phar­ma R&D ops are the weak­est in its heavy­weight class.

This new deal brings a pipeline that al­so adds a PD-1 — one in a tidal wave of check­points — as well as TIM-3 and LAG-3 as­sets, which are al­so not so un­com­mon. In the mean­time, Bar­ron made it clear in a call with re­porters this morn­ing that he was ea­ger to see about the po­ten­tial to ex­pand Ze­ju­la in­to the broad­er HRD-pos­i­tive com­mu­ni­ty, which would dra­mat­i­cal­ly in­crease the size of the mar­ket.

PARPs work by in­ter­fer­ing with DNA re­pair mech­a­nisms that al­low can­cer cells to sur­vive, open­ing up an av­enue that could re­late to a va­ri­ety of can­cers.

So what hap­pens to the 800 or so staffers at Tesaro? 

Em­ma Walm­s­ley

In a call with re­porters Mon­day morn­ing, CEO Em­ma Walm­s­ley not­ed that the deal wasn’t be­ing dri­ven by cost syn­er­gies and al­so brings com­mer­cial ca­pa­bil­i­ties back to a com­pa­ny that cur­rent­ly doesn’t have an on­col­o­gy sales force. In time, she added, they’ll look at syn­er­gies — code for cuts — but it’s ear­ly days on that.

Walm­s­ley al­so de­clined to say just what kind of peak sales they can ex­pect from Ze­ju­la. In the past, though, peak sales es­ti­mates have climbed to $2 bil­lion.

“Our strong be­lief is that PARP in­hibitors are im­por­tant med­i­cines that have been un­der ap­pre­ci­at­ed in terms of the im­pact they can have on can­cer pa­tients,” Bar­ron not­ed in a state­ment. “We are op­ti­mistic that Ze­ju­la will demon­strate ben­e­fit in pa­tients with ovar­i­an can­cer be­yond those who are BR­CA-pos­i­tive as front-line treat­ment. We are al­so very ex­cit­ed that through this trans­ac­tion, we will have the op­por­tu­ni­ty to work with an out­stand­ing Boston-based on­col­o­gy group with deep clin­i­cal de­vel­op­ment ex­per­tise and to­geth­er we will ex­plore Ze­ju­la’s ef­fi­ca­cy be­yond ovar­i­an can­cer in­to mul­ti­ple tu­mour types to help many more pa­tients.”


Im­age: Ax­el Hoos, Hal Bar­ron, John Lep­ore, Kevin Sin and Tony Wood.

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His­toric drug pric­ing re­forms pass; Pfiz­er ac­quires GBT; The long search for non-opi­oid pain drugs; and more

Welcome back to Endpoints Weekly, your review of the week’s top biopharma headlines. Want this in your inbox every Saturday morning? Current Endpoints readers can visit their reader profile to add Endpoints Weekly. New to Endpoints? Sign up here.

The Endpoints Weekly has officially crossed the 60,000 mark on subscribers — thanks to all of your support. As the editorial team grows, we’ve been able to do a lot more, with many of those on display this week. Be sure to check out Lei Lei Wu’s deep dive on pain R&D. If you missed it, you may also rewatch her companion panel here.

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Gold for adults, sil­ver for in­fants: Pfiz­er's Pre­vnar 2.0 head­ed to FDA months af­ter Mer­ck­'s green light

Pfizer was first to the finish line for the next-gen pneumococcal vaccine in adults, but Merck beat its rival with a jab for children in June.

Now, two months after Merck’s 15-valent Vaxneuvance won the FDA stamp of approval for kids, Pfizer is out with some late-stage data on its 20-valent shot for infants.

Known as Prevnar 20 for adults, Pfizer’s 20vPnC will head to the FDA by the end of this year for an approval request in infants, the Big Pharma said Friday morning. Discussions with the FDA will occur first and more late-stage pediatric trials are expected to read out soon, informing the regulatory pathway in other countries and regions.

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No­var­tis re­ports two pa­tient deaths af­ter treat­ment with Zol­gens­ma

Two children with spinal muscular atrophy have died after receiving Novartis’ Zolgensma, a gene therapy designed as a one-time treatment for the rare fatal disease.

The deaths, which resulted from acute liver failure, occurred in Russia and Kazakhstan, Novartis confirmed in a statement to Endpoints News. Having notified health authorities across all the markets where Zolgensma is available, it will update the drug label “to specify that fatal acute liver failure has been reported,” a spokesperson wrote.

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House pass­es his­toric drug pric­ing re­forms, lin­ing up decades-in-the-mak­ing win for Biden and De­moc­rats

The US House of Representatives today voted along party lines (all Dems voted for it), 220-207 to pass new, wide-ranging legislation that will allow Medicare drug price negotiations for the first time ever, and cap seniors’ drug expenses to $2,000 per year and seniors’ insulin costs at $35 per month.

Setting up a major victory for President Joe Biden, representatives returned from their summer recess to pass the Inflation Reduction Act, even as many noted the bill would only modestly reduce inflation.

Senate Finance Committee Chair Ron Wyden (D-OR) (Francis Chung/E&E News/POLITICO via AP Images)

Sen­ate Fi­nance chair con­tin­ues his in­ves­ti­ga­tion in­to phar­ma tax­es with re­quests for Am­gen

Amgen is the latest pharma company to appear on the radar of Senate Finance Committee Chair Ron Wyden (D-OR), who is investigating the way pharma companies are using subsidiaries in low- or zero-tax countries to lower their tax bills.

Like its peers Merck, AbbVie and Bristol Myers Squibb, Wyden notes how Amgen uses its Puerto Rico operations to consistently pay tax rates that are substantially lower than the U.S. corporate tax rate of 21%, with an effective tax rate of 10.7% in 2020 and 12.1% in 2021.

FDA ap­proves sec­ond in­di­ca­tion for As­traZeneca and Dai­ichi's En­her­tu in less than a week

AstraZeneca and Daiichi Sankyo’s antibody-drug conjugate Enhertu scored its second approval in less than a week, this time for a subset of lung cancer patients.

Enhertu received accelerated approval on Thursday to treat adults with unresectable or metastatic non-small cell lung cancer (NSCLC) whose tumors have activating HER2 (ERBB2) mutations, and who have already received a prior systemic therapy.

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J&J to re­move talc prod­ucts from shelves world­wide, re­plac­ing with corn­starch-based port­fo­lio

After controversially spinning out its talc liabilities and filing for bankruptcy in an attempt to settle 38,000 lawsuits, Johnson & Johnson is now changing up the formula for its baby powder products.

J&J is beginning the transition to an all cornstarch-based baby powder portfolio, the pharma giant announced on Thursday — just months after a federal judge ruled in favor of its “Texas two-step” bankruptcy to settle allegations that its talc products contained asbestos and caused cancer. An appeals court has since agreed to revisit that case.

CSL is gathering its four business units under a unified brand identity strategy (Credit: CSL company site)

CSL brings Se­qirus, Vi­for un­der par­ent um­brel­la brand in iden­ti­ty re­vamp

CSL is gathering its brands under the family name umbrella, renaming its vaccine and newly acquired nephrology specialty businesses with the parent initials.

CSL Seqirus and CSL Vifor join CSL Plasma and CSL Behring as the four now uniformly branded business units of the global biopharma. The Seqirus vaccine division was formed in 2015 with the combination of bioCSL and its purchase of Novartis’ flu vaccine business. CSL picked up Vifor Pharma late last year in an $11.7 billion deal for the nephrology, iron deficiency and cardio-renal drug developer.

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