Register Now: From Clinical to Commercial: Accelerating ADC Late-Stage Development with Technology Innovation and Integrated Platform
Logo Image
News|Podcasts|August 11, 2026 (Updated: August 11, 2026)

The BioPharm Brief: Incentives, Immunity, and Iron

Listen
0:00 / 0:00

Today’s BioPharm Brief covers rare disease investment, an FDA fast track designation for a Parkinson disease therapy, and phase 2 results for an siRNA treatment in polycythemia vera.

Welcome to The BioPharm Brief, your daily snapshot of developments shaping the biopharmaceutical industry.

First, rare disease biotech investment is getting a boost in the US following renewal of the FDA’s Priority Review Voucher program. The vouchers, which can be sold or transferred, have recently commanded prices of $150 million to $200 million, creating a significant financial incentive for companies developing treatments for rare diseases. SynaptixBio says the UK is falling behind because it lacks a comparable incentive.

In Parkinson disease, AC Immune’s investigational immunotherapy ACI-7104 has received FDA fast track designation and IND clearance. The therapy is designed to generate antibodies against aggregated alpha-synuclein, and the company is expanding its phase 2 study into the US.

And in polycythemia vera, Silence Therapeutics reported positive phase 2 results for divesiran, an siRNA therapy targeting TMPRSS6. Eighty-eight percent of patients receiving divesiran achieved a clinical response, compared with 19% on placebo. The company plans to begin phase 3 development in 2027.

The numbers to remember today are $150 million, 88%, and one FDA fast track designation.

Thanks for listening to The BioPharm Brief. For analysis and expert insights, please visit BioPharmInternational.com.

Key takeaways:

  • PRVs can drive investment in rare disease programs by creating a valuable financial incentive.
  • Fast track can accelerate development as AC Immune advances its Parkinson disease immunotherapy into phase 2.
  • siRNA shows promise in polycythemia vera, with divesiran producing significantly higher response rates than placebo.

Related to this article

View more
The BioPharm Brief: An AI-Designed Multibody ADC Enters the Clinic, Blackstone Backs Pfizer’s Monthly GLP-1, and enGene Readies a Bladder Cancer BLA
The BioPharm Brief: An AI-Designed Multibody ADC Enters the Clinic, Blackstone Backs Pfizer’s Monthly GLP-1, and enGene Readies a Bladder Cancer BLA
FDA clears the IND for Biolojic Design’s BD200, an AI-designed Trop2/Nectin-4 multibody ADC; Blackstone Life Sciences agrees to provide Pfizer up to $1.5 billion to develop its monthly GLP-1 receptor agonist berobenatide; and enGene Therapeutics plans a year-end BLA for detalimogene voraplasmid in BCG-unresponsive non-muscle invasive bladder cancer.
Read more
The BioPharm Brief: FDA Designations for a Bispecific CAR-T, a BLA for Friedreich’s Ataxia, and Phase 2b MASH Data for Efinopegdutide
The BioPharm Brief: FDA Designations for a Bispecific CAR-T, a BLA for Friedreich’s Ataxia, and Phase 2b MASH Data for Efinopegdutide
FDA grants RMAT and Fast Track designations to AbelZeta’s CD20/CD19 bispecific CAR-T prizlon-cel in relapsed or refractory large B-cell lymphoma, Larimar Therapeutics completes a BLA seeking accelerated approval of nomlabofusp for Friedreich’s ataxia, and Merck’s GLP-1/glucagon receptor agonist efinopegdutide meets its primary endpoint in a phase 2b MASH trial.
Read more
The BioPharm Brief: argenx Bets on Peptides, a Two-Bispecific Regimen in Prostate Cancer, and a New Take on T-Cell Engagers
The BioPharm Brief: argenx Bets on Peptides, a Two-Bispecific Regimen in Prostate Cancer, and a New Take on T-Cell Engagers
argenx agrees to acquire macrocyclic peptide developer Unnatural Products for up to about $1.15 billion, Johnson & Johnson’s pasritamig and JNJ-9401 bispecific regimen achieves a 73% PSA response in phase 1 in metastatic castration-resistant prostate cancer, and Janux Therapeutics’ TRBV6-targeted T-cell engager JANX011 shows deep B-cell depletion in healthy volunteers.
Read more
The BioPharm Brief: A Bispecific Approval in Head and Neck Cancer, TCR Bispecifics Head to the Clinic, and a New Antibody Target in Essential Thrombocythemia
The BioPharm Brief: A Bispecific Approval in Head and Neck Cancer, TCR Bispecifics Head to the Clinic, and a New Antibody Target in Essential Thrombocythemia
FDA grants accelerated approval to Johnson & Johnson’s subcutaneous EGFR/MET bispecific Rybrevant Faspro for previously treated head and neck squamous cell carcinoma, T-Therapeutics raises a $133 million Series B to take TCR-CD3 bispecifics into clinical trials, and Alethio Therapeutics raises a $90 million Series A to advance its first-in-class G6B antibody for essential thrombocythemia.
Read more
The BioPharm Brief: Ivonescimab Priority Review in China, Stargardt Gene Therapy Moves Toward Phase 3, and Longer Dosing Intervals for an IBD Bispecific
The BioPharm Brief: Ivonescimab Priority Review in China, Stargardt Gene Therapy Moves Toward Phase 3, and Longer Dosing Intervals for an IBD Bispecific
China’s NMPA grants priority review to Akeso’s PD-1/VEGF bispecific ivonescimab with chemotherapy for first-line biliary tract cancer, VeonGen Therapeutics aligns with FDA on a phase 3 design for its dual-AAV Stargardt gene therapy VG801, and Caldera Therapeutics’ IL-23p19×TL1A bispecific CLD-423 shows a half-life of more than 40 days in a phase 1a trial.
Read more
The BioPharm Brief: A $7 Billion Oncology Option Deal, a TL1A Pivot, and Oral Adalimumab Heads to the Clinic
The BioPharm Brief: A $7 Billion Oncology Option Deal, a TL1A Pivot, and Oral Adalimumab Heads to the Clinic
Boehringer Ingelheim licenses six preclinical ADC and T-cell engager programs from Sino Biopharmaceutical in a deal worth up to $7 billion, Spyre Therapeutics drops anti-TL1A antibody SPY072 in rheumatic diseases after phase 2 misses and turns to hidradenitis suppurativa, and Biora Therapeutics gets ethics approval for a first-in-human trial of its BioJet oral adalimumab capsule.
Read more