Key blad­der can­cer da­ta pave way for Seat­tle Ge­net­ics to sub­mit mar­ket­ing ap­pli­ca­tion for armed an­ti­body

Seat­tle Ge­net­ics is one step clos­er to get­ting its sec­ond armed an­ti­body across the fin­ish line, af­ter the ‘break­through’ Astel­las-part­nered drug — en­for­tum­ab ve­dotin — helped pa­tients with ad­vanced or metasta­t­ic urothe­lial can­cer, whose dis­ease pro­gressed de­spite treat­ment with both plat­inum-con­tain­ing chemother­a­py and a check­point in­hibitor, in a key study.

The drug in­duced a 44% ob­jec­tive re­sponse rate (ORR) in 128 pa­tients — and al­though de­tailed re­sults from the sin­gle-arm EV-201 study will be re­vealed at a lat­er date, the da­ta are com­pelling enough for Seat­tle to sub­mit a US mar­ket­ing ap­pli­ca­tion for the an­ti­body drug con­ju­gate (ADC), the com­pa­ny said on Thurs­day. A late-stage tri­al de­signed to con­firm the drug’s safe­ty and ef­fi­ca­cy in this pa­tient pop­u­la­tion is on­go­ing.

AD­Cs are a class of ther­a­peu­tics in which a can­cer-killing tox­in is at­tached to a spe­cif­ic an­ti­body us­ing a biodegrad­able link­er. De­signed to min­i­mize the ef­fects of the chemother­a­py on healthy cells while max­i­miz­ing tu­mour cell death, the tech­nol­o­gy is some­times likened to a tro­jan horse as it is en­gi­neered to go un­no­ticed, de­liv­er­ing chemother­a­pies to cells ex­press­ing the anti­gen tar­get. Seat­tle Ge­net­ics $SGEN al­ready has one ADC on the mar­ket, Ad­cetris, and a slate of oth­ers in de­vel­op­ment.

En­for­tum­ab ve­dotin (EV) tar­gets Nectin-4, a cell ad­he­sion mol­e­cule iden­ti­fied as an ADC tar­get by Astel­las. The ex­per­i­men­tal ADC is al­so be­ing test­ed for use in new­ly di­ag­nosed pa­tients with lo­cal­ly ad­vanced or metasta­t­ic urothe­lial can­cer in com­bi­na­tion with Keytru­da and/or plat­inum chemother­a­py.

The drug con­tin­ues to be eval­u­at­ed in the two co­hort EV-201 tri­al: in pa­tients with lo­cal­ly ad­vanced or metasta­t­ic urothe­lial can­cer that have been pre­vi­ous­ly treat­ed with a PD-1 or PD-L1 in­hibitor, in­clud­ing those who have al­so been giv­en plat­inum-based chemother­a­py (co­hort 1); and those who have not re­ceived a plat­inum-con­tain­ing chemother­a­py and are in­el­i­gi­ble for the chemother­a­py cis­platin (co­hort 2).

In the pre­vi­ous phase I tri­al, EV gen­er­at­ed ORR of of 45%, with a me­di­an du­ra­tion of re­sponse (DOR) of 7.5 months in the check­point ex­pe­ri­enced pop­u­la­tion, SVB Leerink an­a­lyst An­drew Berens not­ed. “Based on the top-line da­ta an­nounced…we be­lieve that EV has suf­fi­cient­ly cleared the bar need­ed to ob­tain ac­cel­er­at­ed ap­proval, which we view as a 20-25% ORR with me­di­an DOR of ~5.5 months.”

Urothe­lial can­cer is the most com­mon type of blad­der can­cer. About 80,470 new cas­es of blad­der can­cer are ex­pect­ed to be di­ag­nosed this year, and it is an­tic­i­pat­ed 17,670 blad­der can­cer deaths will oc­cur in 2019, ac­cord­ing to Amer­i­can Can­cer So­ci­ety es­ti­mates. Da­ta sug­gest most pa­tients do not re­spond to check­point in­hibitors af­ter a plat­inum-con­tain­ing ther­a­py has failed as an ini­tial treat­ment for ad­vanced dis­ease, and there are no oth­er ap­proved op­tions for pa­tients once these two lines of treat­ment have been ex­haust­ed.

Da­ta Lit­er­a­cy: The Foun­da­tion for Mod­ern Tri­al Ex­e­cu­tion

In 2016, the International Council for Harmonisation (ICH) updated their “Guidelines for Good Clinical Practice.” One key shift was a mandate to implement a risk-based quality management system throughout all stages of a clinical trial, and to take a systematic, prioritized, risk-based approach to clinical trial monitoring—on-site monitoring, remote monitoring, or any combination thereof.

Pfiz­er's big block­buster Xel­janz flunks its post-mar­ket­ing safe­ty study, re­new­ing harsh ques­tions for JAK class

When the FDA approved Pfizer’s JAK inhibitor Xeljanz for rheumatoid arthritis in 2012, they slapped on a black box warning for a laundry list of adverse events and required the New York drugmaker to run a long-term safety study.

That study has since become a consistent headache for Pfizer and their blockbuster molecule. Last year, Pfizer dropped the entire high dose cohort after an independent monitoring board found more patients died in that group than in the low dose arm or a control arm of patients who received one of two TNF inhibitors, Enbrel or Humira.

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Covid-19 roundup: EU and As­traZeneca trade blows over slow­downs; Un­usu­al unions pop up to test an­ti­bod­ies, vac­cines

After coming under fire for manufacturing delays last week, AstraZeneca’s feud with the European Union has spilled into the open.

The bloc accused the pharma giant on Wednesday of pulling out of a meeting to discuss cuts to its vaccine supplies, the AP reported. AstraZeneca denied the reports, saying it still planned on attending the discussion.

Early Wednesday, an EU Commission spokeswoman said that “the representative of AstraZeneca had announced this morning, had informed us this morning that their participation is not confirmed, is not happening.” But an AstraZeneca spokesperson later called the reports “not accurate.”

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Adeno-associated virus-1 illustration; the use of AAVs resurrected the gene therapy field, but companies are now testing the limits of a 20-year-old technology (File photo, Shutterstock)

Af­ter 3 deaths rock the field, gene ther­a­py re­searchers con­tem­plate AAV's fu­ture

Nicole Paulk was scrolling through her phone in bed early one morning in June when an email from a colleague jolted her awake. It was an article: Two patients in an Audentes gene therapy trial had died, grinding the study to a halt.

Paulk, who runs a gene therapy lab at the University of California, San Francisco, had planned to spend the day listening to talks at the American Association for Cancer Research annual meeting, which was taking place that week. Instead, she skipped the conference, canceled every work call on her calendar and began phoning colleagues across academia and industry, trying to figure out what happened and why. All the while, a single name hung in the back of her head.

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Pascal Soriot, AP

As­traZeneca CEO Pas­cal So­ri­ot sev­ers an un­usu­al board con­nec­tion, steer­ing clear of con­flicts while re­tain­ing im­por­tant al­liances

CSL Behring chief Paul Perreault scored an unusual coup last summer when he added AstraZeneca CEO Pascal Soriot to the board, via Zoom. It’s rare, to say the least, to see a Big Pharma CEO take any board post in an industry where interests can simultaneously connect and collide on multiple levels of operations.

The tie set the stage for an important manufacturing connection. The Australian pharma giant agreed to supply the country with 10s of millions of AstraZeneca’s Covid-19 vaccine, once it passes regulatory muster.

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Jackie Fouse, Agios CEO

Agios scores its sec­ond pos­i­tive round of da­ta for its lead pipeline drug — but that won't an­swer the stub­born ques­tions that sur­round this pro­gram

Agios $AGIO bet the farm on its PKR activator drug mitapivat when it recently decided to sell off its pioneering cancer drug Tibsovo and go back to being a development-stage company — for what CEO Jackie Fouse hoped would be a short stretch before they got back into commercialization.

On Tuesday evening, the bellwether biotech flashed more positive topline data — this time from a small group of patients in a single-arm study. And the executive team plans to package this with its earlier positive results from a controlled study to make its case for a quick OK.

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George Yancopoulos (L) and Len Schleifer (Regeneron)

Re­gen­eron touts pos­i­tive pre­lim­i­nary im­pact of its Covid an­ti­body cock­tail, pre­vent­ing symp­to­matic in­fec­tions in high-risk group

Regeneron flipped its cards on an interim analysis of the data being collected for its Covid-19 antibody cocktail used as a safeguard against exposure to the virus. And the results are distinctly positive.

The big biotech reported Tuesday morning that their casirivimab and imdevimab combo prevented any symptomatic infections from occurring in a group of 186 people exposed to the virus through a family connection, while the placebo arm saw 8 of 223 people experience symptomatic infection. Symptomatic combined with asymptomatic infections occurred in 23 people among the 223 placebo patients compared to 10 of the 186 subjects in the cocktail arm.

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As­traZeneca scores new goal on the pipeline front, adding its first AI-gen­er­at­ed tar­get to the port­fo­lio

As more and more biopharmas develop artificial intelligence platforms, the drug discovery process is being reshaped to fit new goals on cutting down the prodigious amount of time, energy and money that go into a drug program. Now one of the most ambitious players in the drive to improve on ROI, AstraZeneca, is marking a milestone on that front by adding the first target generated by AI to its portfolio.

Mer­ck scraps Covid-19 vac­cine pro­grams af­ter they fail to mea­sure up on ef­fi­ca­cy in an­oth­er ma­jor set­back in the glob­al fight

After turning up late to the vaccine development game in the global fight against Covid-19, Merck is now making a quick exit.

The pharma giant is reporting this morning that it’s decided to drop development of 2 vaccines — V590 and V591 — after taking a look at Phase I data that simply don’t measure up to either the natural immune response seen in people exposed to the virus or the vaccines already on or near the market.

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