SanegeneBio’s INHBE siRNA Wins China IND for Obesity as First RNAi Target

SanegeneBio’s INHBE siRNA Wins China IND for Obesity as First RNAi Target

SanegeneBio, a clinical‑stage RNAi therapeutics company, announced that China’s National Medical Products Administration (NMPA) approved its Investigational New Drug (IND) application for SGB‑7342, an experimental siRNA medicine targeting Inhibin Beta E (INHBE) for the treatment of obesity. The drug is a GalNAc‑conjugated siRNA designed to suppress INHBE mRNA in hepatocytes, reducing Activin E levels and promoting selective lipolysis while preserving lean body mass.

Regulatory Milestone

ItemDetails
Approval Date16 Dec 2025
AgencyNMPA (China)
ProductSGB‑7342 (INHBE‑targeted siRNA)
IndicationObesity (metabolic disease)
MechanismGalNAc‑conjugated siRNA suppresses INHBE mRNA in liver
InnovationFirst RNAi therapy targeting INHBE globally
Development StageIND‑ready; Phase 1 initiation expected Q1 2026

Drug Profile & Mechanism of Action

AttributeSGB‑7342Scientific Rationale
TargetINHBE mRNA (liver‑expressed)INHBE loss‑of‑function linked to favorable metabolic profile
PayloadGalNAc‑conjugated siRNAEnables hepatocyte‑specific delivery
EffectReduces Activin E protein synthesisDecreases adipose tissue ALK7 receptor signaling
OutcomeSelective lipolysis, reduced fat mass, improved insulin sensitivityPreserves lean muscle mass
AdministrationSingle subcutaneous injection (preclinical)Potent and durable knockdown demonstrated

Preclinical Data Summary

StudyKey Findings
DosingSingle SC administration
INHBE KnockdownPotent and durable mRNA suppression in liver
Weight ReductionSignificant body weight loss in animal models
Body CompositionImproved composition with preserved lean muscle mass
SafetyFavorable safety and tolerability profile
DifferentiationTargeted metabolic pathway vs. broad appetite suppression

Market Opportunity & Competitive Landscape

MetricValueContext
Obesity Prevalence900 million adults globally; 150 million in ChinaHigh unmet need for targeted therapy
Current StandardGLP‑1/GIP agonists (Wegovy, Zepbound)Systemic appetite suppression; muscle mass loss common
RNAi Market$5 billion (2025); projected $15 billion by 2030Growing interest in hepatic/metabolic RNAi
INHBE AdvantageSelective fat loss with lean mass preservationAddresses key limitation of current obesity drugs
Peak Sales Potential¥3‑5 billion (≈ US$420‑700 M) by 203310‑15% share of China obesity market if approved

Strategic Implications

  • For SanegeneBio: First INHBE RNAi globally; GalNAc platform validated for metabolic disease; IND approval enables Phase 1 in Q1 2026; potential for global partnerships given novel mechanism.
  • For Obesity Treatment: Targeted pathway offers precision vs. systemic GLP‑1 therapy; preserved lean mass critical for long‑term health; single‑dose durability may improve compliance.
  • For RNAi Market: Demonstrates expansion beyond rare diseases into mass‑market metabolic conditions; SanegeneBio positions as leader in hepatic RNAi; INHBE becomes high‑value target for pharma licensing.

Forward‑Looking Statements
This brief contains forward‑looking statements regarding SGB‑7342’s clinical development timeline, market penetration, and competitive positioning. Actual results may differ due to regulatory feedback, clinical risks, or competitive responses.-Fineline Info & Tech