Take­da-backed Mer­sana joins the biotech IPO queue with a $75M of­fer­ing and am­bi­tious plans for ADC tech

A lit­tle more than a year af­ter an am­bi­tious Take­da came in with a $1 bil­lion-plus pack­age to col­lab­o­rate with Mer­sana on its an­ti­body/drug con­structs, the Cam­bridge, MA-based biotech has pulled the trig­ger on a $75 mil­lion IPO.

The of­fer­ing fol­lows a col­lab­o­ra­tion with Mer­ck KGaA as well, which was al­so at­tract­ed to the biotech’s boast that it can cre­ate AD­Cs to go af­ter dis­eases that are cur­rent­ly be­yond the reach of the cur­rent gen­er­a­tion of armed an­ti­bod­ies.

Their lead drug is XMT-1522, which is tar­get­ed at HER-2 pos­i­tive breast can­cer. Com­ing in be­hind that is the pre­clin­i­cal XMT-1536, is a Dolaflex­in ADC tar­get­ing NaPi2b-ex­press­ing tu­mors.

As Mer­sana CEO An­na Pro­topa­pas likes to point out, the biotech’s plat­form tech em­ploys a unique link­er tech­nol­o­gy to con­nect an an­ti­body with 12 to 15 drugs. Cur­rent ADC tech,  she says, is typ­i­cal­ly lim­it­ed to three or four drugs in the pay­load. And Mer­sana, which has been work­ing with the an­ti­body ex­perts at Adimab, has added pro­pri­etary treat­ments to the mix.

That added fire­pow­er should make this drug more ef­fi­ca­cious than the drugs cur­rent­ly on the mar­ket, says Pro­topa­pas, while great­ly ex­pand­ing its range.

“We are ef­fi­ca­cious in tu­mors that ex­press HER-2, but at very low lev­els,” the CEO told me in ear­ly 2016. That gives this drug the po­ten­tial to treat a much larg­er pa­tient pop­u­la­tion. In­ves­ti­ga­tors for the com­pa­ny say this ap­proach has promise for breast, gas­tric and non-small cell lung can­cers.

The S-1 re­veals that Mer­ck KGaA paid $12 mil­lion up­front to start their pre­clin­i­cal work, adding a $2 mil­lion mile­stone with $778 mil­lion up for grabs. That all fits in per­fect­ly with a dis­cov­ery-stage deal.

Now in Phase I with the lead, Mer­sana is at­tempt­ing to hit the pub­lic mar­kets at an ear­ly stage. But a string of new biotech IPOs – in­clud­ing a cou­ple of hits for biotechs like Bio­Haven – have helped in­spire more com­pa­nies to jump in­to the queue.

Ac­cord­ing to the S-1, NEA — in this case rep­re­sent­ed by David Mott — holds the lead po­si­tion among this biotech’s in­vestors, with 41% of the eq­ui­ty. Pfiz­er comes in sec­ond with 11.6% and F-Prime holds 9.9%. Pro­topa­pas has a 3% stake in the com­pa­ny.

BiTE® Plat­form and the Evo­lu­tion To­ward Off-The-Shelf Im­muno-On­col­o­gy Ap­proach­es

Despite rapid advances in the field of immuno-oncology that have transformed the cancer treatment landscape, many cancer patients are still left behind.1,2 Not every person has access to innovative therapies designed specifically to treat his or her disease. Many currently available immuno-oncology-based approaches and chemotherapies have brought long-term benefits to some patients — but many patients still need other therapeutic options.3

Pfiz­er’s Doug Gior­dano has $500M — and some ad­vice — to of­fer a cer­tain breed of 'break­through' biotech

So let’s say you’re running a cutting-edge, clinical-stage biotech, probably public, but not necessarily so, which could see some big advantages teaming up with some marquee researchers, picking up say $50 million to $75 million dollars in a non-threatening minority equity investment that could take you to the next level.

Doug Giordano might have some thoughts on how that could work out.

The SVP of business development at the pharma giant has helped forge a new fund called the Pfizer Breakthrough Growth Initiative. And he has $500 million of Pfizer’s money to put behind 7 to 10 — or so — biotech stocks that fit that general description.

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Ken Frazier, AP Images

Why Mer­ck wait­ed, and what they now bring to the Covid-19 fight

Nicholas Kartsonis had been running clinical infectious disease research at Merck for almost 2 years when, in mid-January, he got a new assignment: searching the pharma giant’s vast libraries for something that could treat the novel coronavirus.

The outbreak was barely two weeks old when Kartsonis and a few dozen others got to work, first in small teams and then in a larger task force that sucked in more and more parts of the sprawling company as Covid-19 infected more and more of the globe. By late February, the group began formally searching for vaccine and antiviral candidates to license. Still, while other companies jumped out to announce their programs and, eventually and sometimes controversially, early glimpses at human data, Merck remained silent. They made only a brief announcement about a data collection partnership in April and mentioned vaguely a vaccine and antiviral search in their April 28 earnings call.

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Gilead re­leas­es an­oth­er round of murky remde­sivir re­sults

A month after the NIH declared the first trial on remdesivir in Covid-19 a success, Gilead is out with new results on their antiviral. But although the study met one of its primary endpoints, the data are likely to only add to a growing debate over how effective the drug actually is.

In a Phase III trial, patients given a 5-day dose of remdesivir were 65% more likely to show “clinical improvement” compared to an arm given standard-of-care. The trial, though, gave little indication for whether the drug had an impact on key endpoints such as survival or time-to-recovery. And in a surprising twist, a 10-day dosing arm of remdesivir didn’t lead to a statistically significant improvement over standard of care.

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Fangliang Zhang (Imaginechina via AP Images)

The big mon­ey: Poised to make drug R&D his­to­ry, a Chi­na biotech un­veils uni­corn rac­ing am­bi­tions in a bid to raise $350M-plus on Nas­daq

Almost exactly three years after Shanghai-based Legend came out of nowhere to steal the show at ASCO with jaw-dropping data on their BCMA-targeted CAR-T for multiple myeloma, the little player with Big Pharma connections is taking a giant step toward making it big on Wall Street. And this time they want to seal the deal on a global rep after staking out a unicorn valuation in what’s turned out to be a bull market for biotech IPOs — in the middle of a pandemic.

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Mark Genovese (Stanford via Twitter)

Gilead woos fil­go­tinib clin­i­cal in­ves­ti­ga­tor from Stan­ford to lead the charge on NASH, in­flam­ma­to­ry dis­eases

With an FDA OK for the use of filgotinib in rheumatoid arthritis expected to drop any day now, Gilead has recruited a new leader from academia to lead its foray into inflammatory diseases.

Mark Genovese — a longtime Stanford professor and most recently the clinical chief in the division of immunology and rheumatology — was the principal investigator in FINCH 2, one of three studies that supported Gilead’s NDA filing. In his new role as SVP, inflammation, he will oversee the clinical development of the entire portfolio.

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Stephen Isaacs, Aduro president and CEO (Aduro)

Once a high fly­er, a stag­ger­ing Aduro is auc­tion­ing off most of the pipeline as CEO Stephen Isaacs hands off the shell to new own­ers

After a drumbeat of failure, setbacks and reorganizations over the last few years, Aduro CEO Stephen Isaacs is handing over his largely gutted-out shell of a public company to another biotech company and putting up some questionable assets in a going-out-of-business sale.

Isaacs —who forged a string of high-profile Big Pharma deals along the way — has wrapped a 13-year run at the biotech with one program for kidney disease going to the new owners at Chinook Therapeutics. A host of once-heralded assets like their STING agonist program partnered with Novartis (which dumped their work on ADU-S100 after looking over weak clinical results), the Lilly-allied cGAS-STING inhibitor program and the anti-CD27 program out-licensed to Merck will all be posted for auction under a strategic review process.

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Hill­house re­casts spot­light on Chi­na's biotech scene with $160M round for Shang­hai-based an­ti­body mak­er

Almost two years after first buying into Genor Biopharma’s pipeline of cancer and autoimmune therapies, Hillhouse Capital has led a $160 million cash injection to push the late-stage assets over the finish line while continuing to fund both internal R&D and dealmaking.

The Series B has landed right around the time Genor would have listed on the Hong Kong stock exchange, according to plans reported by Bloomberg late last year. Insiders had said that the company was looking to raise about $200 million.

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Federico Mingozzi (Spark)

Spark touts an­i­mal da­ta for a so­lu­tion to AAV gene ther­a­py's an­ti­body prob­lem

Among all the limitations of using an adeno-associated virus as a vector to deliver a gene — still the most established modality in gene therapy given years of trial and error and finally success — the presence of neutralizing antibodies, whether pre-existing or induced, looms large.

“When I think about the immune responses in AAV, I try to sort of layer them,” Federico Mingozzi, the CSO at Spark Therapeutics, told Endpoints News. “The antibody is the first layer. It’s the first block that you find when you’re trying to do gene transfer.”