Nek­tar takes the spot­light at SITC tout­ing some promis­ing ear­ly da­ta for hard-to-treat can­cers

WASH­ING­TON, DC — One of Nek­tar Ther­a­peu­tics’ top can­cer drugs gained the spot­light at the So­ci­ety for Im­munother­a­py of Can­cer meet­ing over the week­end with the first cut of some promis­ing re­sponse rates in a range of tu­mor types. And the pub­lic biotech $NK­TR be­lieves the re­sults point them to a short path at the FDA that could lead to the drug’s first, fast ap­proval.

Mary Tagli­a­fer­ri

The drug is NK­TR-214, an IL-2 im­muno-on­col­o­gy ther­a­py — built from the ground up by the biotech — which is de­signed to bind to the CD122 re­cep­tor on the sur­face of CD-8 and CD-4 pos­i­tive im­mune cells to whip up an at­tack on var­i­ous can­cers. Nek­tar struck a 50/50 deal with Bris­tol-My­ers Squibb $BMY to use their drug in com­bi­na­tion with Op­di­vo (nivolum­ab), match­ing a ther­a­py aimed at dri­ving an im­mune re­sponse with a pop­u­lar check­point block­buster that helps take the brakes off the as­sault.

At SITC, the com­pa­ny pro­duced a med­ley of da­ta points, in­clud­ing:

  • In treat­ment-naïve first-line pa­tients with stage IV melanoma, re­searchers tracked re­spons­es in 7 of 11 pa­tients (63%), with 2 com­plete re­spons­es — no vis­i­ble signs of the dis­ease — and 5 par­tial re­spons­es. Not all of these num­bers are pre­cise. It’s im­por­tant to note though that one of the CRs and one of the PRs were un­con­firmed — em­pha­siz­ing just how ear­ly these re­sults are.
  • Among 13 kid­ney can­cer pa­tients with one or more base­line scans, re­spons­es were ob­served in 6 (46%), with 1 com­plete re­sponse and 5 par­tials.
  • For a small group of 4 pa­tients with ad­vanced PD-L1/neg­a­tive non-small cell lung can­cer, the in­ves­ti­ga­tors tracked a re­sponse in 3 (75%), with 1 com­plete and 2 par­tials.

“Sin­gle-agent nivolum­ab is known for all these in­di­ca­tions, with a 34% re­sponse for melanoma,” Mary Tagli­a­fer­ri, se­nior vice pres­i­dent, clin­i­cal at Nek­tar, tells me. “We have a 64% re­duc­tion.”

That’s what in­vestors liked to hear. Nek­tar’s stock quick­ly jumped 23% in pre-mar­ket trad­ing on Mon­day.

Jonathan Za­levsky

“Our re­sponse rate is just over 50% even in PD-L1 neg­a­tive pa­tients,” says Jonathan Za­levsky, Nek­tar’s se­nior vice pres­i­dent of bi­ol­o­gy and pre­clin­i­cal de­vel­op­ment. “And what we like about those met­rics, it gives us a nice con­fir­ma­tion of the in­crease we’re see­ing in our com­bi­na­tion.”

This is an ear­ly snap­shot of this drug, to be sure, but Nek­tar’s team be­lieves that the safe­ty and ef­fi­ca­cy pro­files they’re see­ing in the first snap­shot of da­ta un­der­scores the biotech’s chances of go­ing af­ter an ac­cel­er­at­ed ap­proval for cer­tain pa­tient groups that face par­tic­u­lar­ly poor prospects.

“There is an op­por­tu­ni­ty for Nek­tar to pur­sue an ac­cel­er­at­ed path­way in those pa­tient pop­u­la­tions where the re­sponse rate is very, very low,” says Tagli­a­fer­ri.

They wouldn’t be the first to suc­ceed at that, ei­ther. The FDA has proven ea­ger to get new ther­a­pies to pa­tients with poor prospects, and Nek­tar has filed for “break­through” sta­tus to help en­list reg­u­la­tors’ sup­port for their plans.

The Phase II has now been ex­pand­ed from 250 to 330 pa­tients with 13 co­horts.

So what’s an ap­proval worth here?

Cowen an­a­lyst Chris Shibu­tani is one of the most op­ti­mistic an­a­lysts cov­er­ing the drug, es­ti­mat­ing its 2023 rev­enue at $950 mil­lion — but every­thing has to go right for it to get close to the block­buster mark.

How Pa­tients with Epilep­sy Ben­e­fit from Re­al-World Da­ta

Amanda Shields, Principal Data Scientist, Scientific Data Steward

Keith Wenzel, Senior Business Operations Director

Andy Wilson, Scientific Lead

Real-world data (RWD) has the potential to transform the drug development industry’s efforts to predict and treat seizures for patients with epilepsy. Anticipating or controlling an impending seizure can significantly increase quality of life for patients with epilepsy. However, because RWD is secondary data originally collected for other purposes, the challenge is selecting, harmonizing, and analyzing the data from multiple sources in a way that helps support patients.

Re­gen­eron's Evkeeza shows promise in curb­ing high triglyc­erides, but will ge­net­ic dis­par­i­ties lim­it use?

When Regeneron scored an early approval for lipid lowering antibody Evkeeza back in February, the drugmaker cracked open a new pathway to lower abnormally high cholesterol levels. Now, Regeneron is chasing high triglycerides as well with some promising mid-stage data — but will genetic restrictions limit the drug’s use?

Regeneron’s Evkeeza (evinacumab) cut median triglyceride levels by more than 800 mg/dL (57%) in patients with a rare disorder causing abnormally high triglyceride levels compared with an overall increase of 50 mg/dL (1.8%) in participants on placebo, according to Phase II data presented Sunday at the virtual American College of Cardiology meeting.

$DNA is once again on NYSE; FDA clears Soliris chal­lenger for the mar­ket; Flag­ship’s think­ing big again with eR­NA; 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.

I still remember the uncertainty in the air last year when nobody was sure whether ASCO would cancel their in-person meeting. But it’s now back again for the second virtual conference, and Endpoints News is here for it. Check out our 2-day event reviewing the landscape of cancer R&D and send news our way.

Endpoints News

Keep reading Endpoints with a free subscription

Unlock this story instantly and join 105,400+ biopharma pros reading Endpoints daily — and it's free.

As­traZeneca's Farx­i­ga missed big on Covid-19 study, but it's tak­ing SGLT2 safe­ty da­ta as a sil­ver lin­ing

AstraZeneca hasn’t seen many setbacks in recent months for SGLT2 inhibitor Farxiga, which broke ground in heart failure and kidney disease regardless of diabetes diagnosis. But the British drugmaker had to admit defeat in taking Farxiga into Covid-19, but follow-up results add a bit of a silver lining to that trial’s safety data.

Of hospitalized Covid-19 patients dosed with AstraZeneca’s Farxiga, 11.2% experienced an organ failure or died after 30 days of therapy compared with 13.8% of those given placebo, according to follow-up data from the DARE-19 study revealed Sunday at the virtual American College of Cardiology meeting.

Pfiz­er, Bris­tol My­er­s' Eliquis flops in post-heart surgery pa­tients, spurring an 'un­ex­plained sig­nal' in cer­tain deaths

Pfizer and Bristol Myers Squibb’s non-warfarin blood thinner Eliquis has raced out to become the most prescribed drug of its class on the market — even overtaking warfarin’s long-time lead. But in tricky-to-treat patients after a valve replacement, an investigator-sponsored study couldn’t turn up benefit and raised a troubling safety signal.

Eliquis failed to show benefit over standard of care in preventing serious clinical outcomes after a transaortic valve replacement (TAVR) and was linked to an “unexplained signal” in a subset of populations with a higher rate of non-CV deaths who did not need blood thinners apart from the surgery, according to data presented Saturday at the virtual American College of Cardiology meeting.

Gene ther­a­py from Bio­gen's $800M buy­out flops in mid-stage study, deal­ing blow to new am­bi­tions

The #2 candidate from Biogen’s $800 million ocular gene therapy buyout has failed in a mid-stage trial, dealing an early blow to the big biotech’s plans to revitalize its pipeline with new technologies.

Biogen announced that the candidate, an experimental treatment for a rare and progressive form of blindness called X-linked retinitis pigmentosa (XLRP), failed to sufficiently improve vision in patients’ treated eye — patients only received an injection in one eye — after a year, on a standard scale, compared to their untreated eye. The company said they saw “positive trends” on several secondary endpoints, including visual acuity, but declined to say whether the trial actually hit any of those endpoints.

Endpoints News

Keep reading Endpoints with a free subscription

Unlock this story instantly and join 105,400+ biopharma pros reading Endpoints daily — and it's free.

Michael Dell (Richard Drew, AP Images)

'Dude, you're get­ting a Del­l' — as a new deep-pock­et biotech in­vestor

What happens when you marry longtime insiders in the global biotech VC game with the family fund of tech billionaire Michael Dell, a synthetic biology legend out of MIT and Harvard and the former director of the NCI?

Today, the answer is a newly financed, $200 million biotech SPAC now cruising the industry for a top player interested in finding a short cut to Nasdaq.

Orion Biotech Opportunities priced their blank check company today, raising $200 million with Dell’s multibillion-dollar MSD group’s commitment on investing another $20 million in a forward-purchase agreement.

Endpoints Premium

Premium subscription required

Unlock this article along with other benefits by subscribing to one of our paid plans.

Bris­tol My­ers backs up its case for heart drug mava­camten as FDA weighs app in car­diomy­opa­thy

When Bristol Myers Squibb signed off on its $13 billion acquisition of MyoKardia back in October, it was making a big bet that lead drug mavacamten could prove a game changer in cardiac myopathy. Now, with the drug up for FDA review, Bristol Myers is backing up its case with new quality of life data.

Patients dosed with myosin inhibitor mavacamten posted a clinically significant increase in scores on the Kansas City Cardiomyopathy Questionnaire, a catch-all summary of symptoms and quality of life markers, over placebo at 30 weeks, according to data from the Phase III EXPLORER-HCM study presented Saturday at the virtual American College of Cardiology meeting.

Vas Narasimhan (Photographer: Simon Dawson/Bloomberg via Getty Images)

No­var­tis whiffs on En­tresto study af­ter heart at­tacks — but that does­n't mean it's go­ing down qui­et­ly

If Novartis learned one thing from its interaction with the FDA over its latest heart failure approval for Entresto, it was that missing a primary endpoint may not be the nail in the coffin. Now, Entresto has missed again on a late-stage study in high-risk heart patients, and it’s already sowing the seeds for a path forward regardless.

Novartis’ Entresto couldn’t best standard-of-care ramipril in staving off a composite of deaths and heart failure events in patients with left ventricular systolic dysfunction and/or pulmonary congestion who have had a prior heart attack, according to topline data from the Phase III PARADISE-MI study revealed Saturday at the virtual American College of Cardiology meeting.