Macro­Gen­ics touts a PhI­II win in a head-to-head with best-sell­er Her­ceptin — shares rock­et high­er

Macro­Gen­ics $MGNX has claimed suc­cess in their Phase III tri­al of their drug mar­ge­tux­imab for metasta­t­ic breast can­cer, putting them on the path to a BLA fil­ing. But they’re not of­fer­ing a lot of de­tail.

The top-line num­ber cleared the bar for sta­tis­ti­cal sig­nif­i­cance, but not by a wide mar­gin.

Scott Koenig

In a head-to-head with Her­ceptin (trastuzum­ab), the biotech re­ports that their drug won out in pro­long­ing pro­gres­sion-free sur­vival among heav­i­ly treat­ed third- and fourth-line HER2+ pa­tients. The p-val­ue on the pri­ma­ry end­point was 0.033 with a 24% risk re­duc­tion for dis­ease pro­gres­sion. A much bet­ter score of 0.005, though, was record­ed for the ma­jor­i­ty of pa­tients in the tri­al who were car­ri­ers of the CD16A (FcγRI­I­Ia) 158F al­lele, which is linked to re­sis­tance to Her­ceptin.

This was a close­ly watched cat­a­lyst for Macro­Gen­ics. Its shares shot up 166% on the top-line re­port Wednes­day morn­ing. Jonathan Chang at Leerink not­ed:

Many in­vestors we have spo­ken with ex­pect­ed the study to be neg­a­tive and we be­lieve lit­tle val­ue for Her2+ mBC was baked in­to the MGNX stock. We mod­eled a 60% prob­a­bil­i­ty of suc­cess.

We don’t know yet how those num­bers trans­late to months of added PFS, or the over­all sur­vival rate. Re­searchers are still pon­der­ing OS. The more ex­act da­ta, which will tell an­a­lysts a lot more about the mar­ket po­ten­tial for this drug, will be un­veiled at a lat­er can­cer con­fer­ence.

Re­searchers will be tak­ing the da­ta from the SOPHIA study, which en­rolled 536 pa­tients, to reg­u­la­tors some­time in the sec­ond half of this year.

The com­pa­ny has been tout­ing their an­ti­body’s en­gi­neer­ing, say­ing the bet­ter Fc do­main can en­gage the im­mune sys­tem. The drug is de­signed to tar­get the HER2 on­co­pro­tein. And there’s a long way to go on the de­vel­op­ment ef­fort.

“We look for­ward to ad­di­tion­al op­por­tu­ni­ties to de­vel­op mar­ge­tux­imab in oth­er HER2-pos­i­tive breast and gas­tric can­cer pop­u­la­tions,” Macro­Gen­ics CEO Scott Koenig re­marked. 

A side ben­e­fi­cia­ry in to­day’s news is Zai Lab, $ZLAB the Chi­nese biotech that in-li­censed re­gion­al rights to the drug for a low up­front pay­ment. Jef­feries not­ed:

Re­call, ZLAB in-li­censed marge 12/2/18 for an up­front of $25M for rights to breast and gas­tric can­cer in Chi­na (our note here). Ex­pec­ta­tions for the SOPHIA ph.III read­out were low, and we be­lieve ZLAB took a cal­cu­lat­ed risk/ben­e­fit ap­proach w/ marge that led to best-case sce­nario, giv­en to­day’s news.

The biotech hit a stum­bling block at the end of last year. Leery about signs of liv­er tox­i­c­i­ty among pa­tients tak­ing a B7-H3 × CD3 bis­pe­cif­ic un­der de­vel­op­ment at Macro­Gen­ics, the FDA slapped a par­tial hold on the ear­ly-stage pro­gram.

Donald and Melania Trump watch the smoke of fireworks from the South Lawn of the White House on July 4, 2020 (via Getty)

Which drug de­vel­op­ers of­fer Trump a quick, game-chang­ing ‘so­lu­tion’ as the pan­dem­ic roars back? Eli Lil­ly and Ab­Cellera look to break out of the pack

We are unleashing our nation’s scientific brilliance and will likely have a therapeutic and/or vaccine solution long before the end of the year.

— Donald Trump, July 4

Next week administration officials plan to promote a new study they say shows promising results on therapeutics, the officials said. They wouldn’t describe the study in any further detail because, they said, its disclosure would be “market-moving.”

— NBC News, July 3

Something’s cooking. And it’s not just July 4 leftovers involving stale buns and uneaten hot dogs.

Over the long weekend observers picked up signs that the focus in the Trump administration may swiftly shift from the bright spotlight on vaccines being promised this fall, around the time of the election, to include drugs that could possibly keep patients out of the hospital and take the political sting out of the soaring Covid-19 numbers causing embarrassment in states that swiftly reopened — as Trump cheered along.

So far, Gilead has been the chief beneficiary of the drive on drugs, swiftly offering enough early data to get remdesivir an emergency authorization and into the hands of the US government. But their drug, while helpful in cutting stays, is known for a limited, modest effect. And that won’t tamp down on the hurricane of criticism that’s been tearing at the White House, and buffeting the president’s most stalwart core defenders as the economy suffers.

We’ve had positive early-stage vaccine data, most recently from Pfizer and BioNTech, playing catchup on an mRNA race led by Moderna — where every little sign of potential trouble is magnified into a lethal threat, just as every advance excites a frenzy of support. But that race still has months to play out, with more Phase I data due ahead of the mid-stage numbers looming ahead. A vaccine may not be available in large enough quantities until well into 2021, which is still wildly ambitious.

So what about a drug solution?

Trump’s initial support for a panacea focused on hydroxychloroquine. But that fizzled in the face of data underscoring its ineffectiveness — killing trials that aren’t likely to be restarted because of a recent population-based study offering some support. And there are a number of existing drugs being repurposed to see how they help hospitalized patients.

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Covid-19 roundup: Left out no longer, No­vavax se­cures largest Warp Speed deal yet: $1.6B

It looks like Novavax won’t be left out of Operation Warp Speed after all.

A month after the Gaithersburg, MD biotech saw its shares tumble when it was left off the first reported list of finalists for the White House’s Covid-19 vaccine accelerator, HHS and the Department of Defense have announced a $1.6 billion deal to scale up their Covid-19 candidate. It is the largest deal HHS has announced yet, eclipsing the $1.2 billion deal the administration reached with AstraZeneca in May.

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Cel­lec­tis slammed af­ter pa­tient dies and FDA slaps a hold on their tri­al for an off-the-shelf CAR-T for mul­ti­ple myelo­ma

Cellectis was slammed after the market close on Monday as the biotech reported that the FDA demanded it hit the brakes on their MELANI-01 trial for their off-the-shelf cell therapy UCARTCS1A after one of the patients in the study died of treatment-related cardiac arrest.

The multiple myeloma patient had previously been treated unsuccessfully with various therapies, noted the biotech, and had been given dose level two (DL2) of their allogeneic CAR-T.

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Jean-Paul Clozel, Idorsia CEO (Patrick Straub/Keystone via AP Images)

Sec­ond PhI­II study for Idor­si­a's sleep drug re­turns pos­i­tive re­sults, but al­so rais­es new ques­tions

Following a successful Phase III study in April showcasing the safety and potential of its new sleep drug, Idorsia posted some mixed news in the second Phase III study, but that won’t stop a planned filing aimed at regulatory approval.

The drug, a dual orexin receptor antagonist (DORA) called daridorexant, was found to significantly improve sleep maintenance and subjective total sleep time in 25 mg doses, replicating results from the first Phase III study. However, improvements in sleep onset and daytime functioning narrowly missed statistical significance, despite numerical consistency with the April study.

UP­DAT­ED: Im­munomedics spells out PFS ben­e­fit of Trodelvy in mTNBC, hunt­ing a full OK just weeks af­ter ac­cel­er­at­ed ap­proval

By the time the FDA finally granted an accelerated OK for Immunomedics’ Trodelvy, we already got a very strong hint that their confirmatory Phase III study in metastatic triple-negative breast cancer was a success.

That’s because the independent data safety monitoring committee recommended that the trial be stopped early. But just what pointed them to the conclusion was still unclear.

“We do not know the totality of their decision other than it’s pretty evident that the primary endpoint was met; otherwise they could not request to halt the study,” Behzad Aghazadeh, the executive chairman, told Endpoints News at the time.

Shoshanna Shendelman, Applied Therapeutics CEO (Applied Therapeutics)

A lit­tle biotech slaps back at a 'crim­i­nal' short at­tack, vow­ing to pur­sue a pros­e­cu­tion of their case

As short attacks go, Biotech Research Partners’ assault on Applied Therapeutics’ “cherry picked” data and a variety of so-called red flags didn’t cause a whole lot of damage. Ahead of the July 4 holiday, its shares $APLT were dinged and showed signs of quick recovery.

But that didn’t stop an incendiary response, as the biotech swung into action bright and early Monday morning.

Applied Therapeutics accused the authors of the short report of manipulating graphs and figures, misrepresenting data and included factual misrepresentations — all of which added up, in their view, to fraud.

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Bill Haney, Dragonfly CEO (Dave Pedley/Getty Images for SXSW)

A boom­ing Drag­on­fly is tak­ing its TriN­KETs to Copen­hagen as the lat­est Bris­tol My­ers pact spurs ex­pan­sion plans — out­side the US

Bristol Myers Squibb is making a habit out of collaborating with the crew at Dragonfly, adding their 3rd deal in a series that now will take them into newly charted R&D territory. And the fast-growing team at the Cambridge-based biotech is adding a facility in Copenhagen for its next growth spurt, where the government is making it easy to recruit scientists internationally as the U.S. throttles back.

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Ernest Loumaye, ObsEva CEO (ObsEva)

UP­DAT­ED: Ob­sE­va’s sec­ond uter­ine fi­broids PhI­II comes through, send­ing some in­vestors to the hills

In the three-company race to develop a new uterine fibroid treatment, ObsEva long lagged behind AbbVie and Myovant. Still, they hoped that better efficacy — including a 93.9% response rate in one Phase III trial — could ultimately deliver better sales.

Now, though, the second of those Phase III studies is out, and it has brought the Swedish biotech back to earth.

In the second of their Phase III trials, 75.5% of patients who took ObsEva’s experimental tablet linzagolix plus a hormone saw their bleeding reduced by at least 50% and at least 80 ml after 24 weeks. Pooling those results with new data from their first Phase III trial — which showed a 93.9% response rate at 24 weeks and a 91.6% response rate at 52 weeks — ObsEva calculated a collective 84.7% responder rate for patients taking their therapy and said the data “confirm potential best-in-class” status.

Covid-19 roundup: Teamed up with NIH, Re­gen­eron launch­es PhI­II pre­ven­tion tri­al for an­ti­body cock­tail

As Regeneron moves its antibody cocktail into Phase II/III trials testing REGN-COV2 as a treatment for both hospitalized and non-hospitalized patients with Covid-19, the biotech is also starting a Phase III in the prevention setting.

The National Institute of Allergy and Infectious Diseases — which orchestrated the large, randomized study for remdesivir that produced positive results — will jointly run the study.

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