COMPANY RESEARCH

Biotheryx

A May 2026 announcement reports PK, PBMC degradation, and early activity in Phase 1 dose escalation of the bifunctional CDK4/6 degrader BTX-9341; expansion studies are ongoing.

Company at a glance

Corporate information

Company entity
BioTheryX, Inc.
Headquarters / principal office
San Diego, CaliforniaSelf-reported location on the company LinkedIn page; regional scope may differ from the legal or global headquarters. ↗
Founded
2008 ↗
Ownership / capital status
PrivateSeries E (latest disclosure identified) ↗
Official corporate reference
https://www.biotheryx.com/ ↗
LinkedIn company page
LinkedIn ↗ ↗
Latest financing / award identified
2021-05-20 · Series E · $92 million ↗

Historical announcement; subsequent financing is not ruled out.

Profile review: 2026-11-04 · Fields retain their individual source dates. Undisclosed values are not zero; early or historical events do not establish the latest financing. Awards and acquisitions are distinguished from equity rounds.

Disease tags match recorded text mentions and require program-level verification.

Technology, programs & evidence

A May 2026 announcement reports PK, PBMC degradation, and early activity in Phase 1 dose escalation of the bifunctional CDK4/6 degrader BTX-9341; expansion studies are ongoing.

Program / serviceTarget / indicationRepresentative stageEvidence & scope
BTX-9341CDK4/6 · See individual trial / indication; not individually confirmed in this reviewPhase 1Human results reported by the source; see facts and original materials for type and quality

Related news & literature

Company-name matches are discovery leads; verify entity identity and transaction roles in the original source.

No cataloged update explicitly mentions this company.

Same-field reading (not company-specific)
Amphista Therapeutics / Business Wire

Amphista previews BRD9 degradation findings and BRAMLIE trial design at ASH

Amphista announced an ASH oral presentation on AMX-883-mediated BRD9 degradation, describing disruption of hematopoietic transcriptional programs, myeloid differentiation, and reduced leukemic stem-cell frequency in experimental work. A separate abstract outlines the ongoing Phase 1 BRAMLIE study in AML and high-risk myelodysplastic syndrome. The announcement does not establish clinical efficacy for AMX-883.

Nurix Therapeutics

Nurix previews updated bexobrutideg Phase 1 CLL/SLL findings for ASH

Nurix announced updated Phase 1a/1b findings for its oral BTK degrader bexobrutideg (NX-5948) in relapsed or refractory CLL/SLL. The ASH presentation will include patients previously exposed to covalent BTK inhibitors and data at the recommended Phase 2 dose of 600 mg once daily. The release describes durable activity without providing numerical response rates.

Proceedings of the National Academy of Sciences / PubMed

Bispecific protein drives dual receptor degradation in mouse eye-disease models

A PNAS study reports RHV, a tetravalent bispecific protein designed to internalize and lysosomally degrade VCAM-1 and VEGFR on pathological vessels. The original abstract describes activity in mouse choroidal neovascularization models, including efficacy comparable to aflibercept at one-quarter of the molar dose. This is preclinical extracellular receptor degradation, distinct from an intracellular small-molecule PROTAC.

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Sources & open questions

  • Small, open-label studies should not be used for cross-trial efficacy / safety comparisons with approved CDK4/6 inhibitors.
  1. BTX-9341 Phase1 data ↗Biotheryx · 2026-05-18
  2. Biotheryx company page ↗Biotheryx / LinkedIn · Not stated
  3. BioTheryX announces $92m Series E ↗Biotheryx · 2021-05-20
  4. Biotheryx ↗Biotheryx ·
  5. Company-managed LinkedIn profile — self-reported location ↗Biotheryx · Checked 2026-11-04; source publication date retained where stated

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