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VYNE Therapeutics

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Namestring
VYNE Therapeutics
Legal namestring
VYNE Therapeutics Inc.
Company typeenum
Public
Founded yearint
2019
Descriptiontext

VYNE Therapeutics is a clinical-stage biopharmaceutical company developing proprietary therapies for immuno-inflammatory conditions through its InhiBET BET Inhibitor Platform, which targets bromo-domain and extra-terminal domain (BET) proteins involved in regulation of inflammatory and oncogenic genes. The pipeline consists of two candidates licensed from Tay Therapeutics: Repibresib (VYN201), a locally administered pan-BD BET inhibitor gel being developed primarily for nonsegmental vitiligo; and VYN202, an oral BD2-selective BET inhibitor for immune-mediated diseases including plaque psoriasis. In July 2025, Repibresib's Phase 2b vitiligo trial did not meet its primary or key secondary endpoints, and in April 2025 the FDA placed a clinical hold on VYN202's Phase 1b psoriasis trial following observed testicular toxicity in dogs (partially lifted for female patients).

The company has no commercial products and minimal operating revenue, consisting almost entirely of royalty payments from LEO Pharma on the licensed Finacea foam franchise (~$0.2 million per quarter). With $39.6 million in cash as of June 30, 2025, VYNE has limited standalone runway. In December 2025, VYNE announced an all-stock merger with Yarrow Bioscience valued at approximately $200 million, expected to close in Q2 2026, under which pre-merger VYNE stockholders will retain only ~3% of the combined entity, which will operate as Yarrow Bioscience (ticker YARW) and focus on YB-101 for Graves' disease and thyroid eye disease. The combined company is expected to be funded into 2028 by ~$200 million in pre-closing private financings led by RTW Investments.

Short descriptiontext

VYNE Therapeutics is a clinical-stage biopharmaceutical company developing BET inhibitor therapies (Repibresib, VYN202) for immuno-inflammatory diseases, with no commercial revenue beyond LEO Pharma royalties and a pending all-stock merger into Yarrow Bioscience (expected to close Q2 2026).

Operating statusenum
Operating
Ownership categoryenum
Headcount rangeband
11–50
akta.pro rankint
HeadquartersMenlo Park, United States
HQ citystring
Menlo Park
HQ countrystring
United States
HQ regionstring
North America
Markets served

Serves global market

Offices2 records

Each record includes

City, Country, Type, Description, Source

Keyword5 values
BET inhibitor therapeutics, immuno-inflammatory treatments, clinical-stage biopharmaceutical, dermatology drug development, small molecule therapies
Industry3 codes
1Immunology & Inflammation Pharmaceuticals
CodeHLAIAAADPrimaryYes
2Immunology & Autoimmune Specialty Pharmaceuticals
CodeHLAIACABPrimaryNo
3Endocrinology & Reproductive Health Pharmaceuticals (incl. Women’s Health)
CodeHLAIAAAJPrimaryNo
NAICS code1 code
  • Research and Development in Biotechnology (except Nanobiotechnology)541714
SIC code2 codes
  • Pharmaceutical Preparations2834
  • Biological Products, (No Disgnostic Substances)2836
Product category
Immuno-inflammatory Therapeutics
Social media profiles1 record
GTM motion1 record

Each record includes

Type, Description, Source

Revenue model2 records
1Royalty Revenue
TypeLicensing Royalties
Description

VYNE receives royalty revenue from its licensing agreement with LEO Pharma for Finacea foam. Royalty revenues were approximately $0.2 million per quarter in 2025.

vynetherapeutics.com
2Merger with Yarrow Bioscience
TypeLicensing Royalties
Description

VYNE agreed to merge with Yarrow Bioscience in an all-stock transaction valued at approximately $200 million. Pre-closing financings of approximately $200 million are expected to fund operations into 2028. The combined company will focus on YB-101 for Graves' disease and thyroid eye disease.

vynetherapeutics.com
Marketing channels5 records

Each record includes

Title, Type, Stage, Description, Source

Distribution channels2 records

Each record includes

Title, Type, Scope, Target buyer, Description, Source

Cost components4 values
Technology or R&D, Personnel, Operations, Others
GTM typeB2B
B2B
Offering typeHardware or Manufacturing
Hardware or Manufacturing
Brand1 record
1InhiBET
Description

BET (bromo-domain and extra-terminal domain) inhibitor platform technology for developing therapies targeting immuno-inflammatory diseases.

vynetherapeutics.com
Core offering1 text field

VYNE Therapeutics is a clinical-stage biopharmaceutical company developing proprietary BET (bromo-domain and extra-terminal domain) inhibitor therapies for immuno-inflammatory conditions. Its lead candidates are Repibresib (VYN201), a topical pan-BD BET inhibitor gel for nonsegmental vitiligo, and VYN202, an oral BD2-selective BET inhibitor for plaque psoriasis and other autoimmune diseases. All assets are investigational; the company currently generates de minimis revenue from a Finacea foam royalty arrangement with LEO Pharma.

Differentiator
Functional benefit
Problem solved
Quantifiable outcome1 of 2 values shown
  • Phase 2b vitiligo trial: Repibresib 3% showed -43.6% change from baseline in F-VASI vs -25.6% for vehicle (p=0.0020)
+1 more record
Product overview1 text field

VYNE Therapeutics is a clinical-stage biopharmaceutical company developing differentiated therapies for immuno-inflammatory conditions. The company's core technology is the proprietary InhiBET™ BET Inhibitor Platform, which includes two drug candidates: Repibresib (VYN201), a locally-administered pan-BD BET inhibitor gel for vitiligo, and VYN202, an oral BD2-selective BET inhibitor for immune-mediated diseases. VYNE is currently undergoing a merger with Yarrow Bioscience to shift focus toward autoimmune thyroid diseases, with the combined company planned to trade as Yarrow Bioscience under ticker YARW.

Product and service2 records
1Repibresib (VYN201)
CategoryDrug Candidate
Description

Locally administered pan-BD BET inhibitor designed as a 'soft drug' for diseases involving multiple inflammatory cell signaling pathways with low systemic exposure; lead indication is nonsegmental vitiligo.

2VYN202
CategoryDrug Candidate
Description

Oral small molecule BD2-selective BET inhibitor designed for class-leading BD2 vs BD1 selectivity, maximum potency against BD2, and optimized oral bioavailability; in development for plaque psoriasis and other immune-mediated diseases.

Scale indicator9 records

Each record includes

Type, Value, Description, Source

Partnership4 partners
Strategic tierCoreTypeStrategic or Co-development PartnerAnnounced on2025-12-17
Description

VYNE agreed to merge with Yarrow Bioscience in an all-stock transaction valued at approximately $200 million. Following closing, the combined company will focus on advancing YB-101, a potentially first-in-class anti-TSHR antibody for Graves' disease and thyroid eye disease. Pre-closing financings of approximately $200 million led by RTW Investments are expected to fund operations into 2028.

Strategic tierMinorTypeChannel Partner/ Reseller/ Distributor
Description

VYNE previously licensed rights to Finacea foam to LEO Pharma A/S. VYNE receives royalty revenue from this agreement, generating approximately $0.2 million per quarter.

Strategic tierMajorTypeStrategic or Co-development Partner
Description

GenSci is conducting a Phase 1 trial evaluating YB-101 in patients with thyroid eye disease (TED) in China. Yarrow executed an exclusive license agreement with Shanghai Scizeng Medical Technology Co., Ltd (an affiliate of GenSci) to obtain global ex-China rights to develop GS-098 in Graves' disease and TED.

Strategic tierCoreTypeTechnology or Integration
Description

VYNE licensed VYN201 and VYN202 from Tay Therapeutics Limited. The VYN202 License Agreement involved a one-time cash payment of $3.75 million in April 2023, with additional development milestone payments including $1.0 million upon initiation of Phase 2b trial for VYN201 and $1.0 million upon initiation of Phase 1a SAD/MAD trial for VYN202.

Recent move6 records

Each record includes

Date, Type, Title, Description, Source

Expansion highlight5 records

Each record includes

Type, Description

Market position
Competitive moat3 records

Each record includes

Type, Details

Key risks5 records

Each record includes

Headline, Details, Source

Key highlights6 records

Each record includes

Headline, Details, Source

Customer concentration

Classification, Details

Segment3 records

Each record includes

Title, Type, Primary, Description, Pain point addressed, Use case, Source

Ideal customer profile3 records

Each record includes

Profile, Firmographic size, Sales motion, Sales cycle length, Buying structure, Purchase trigger, Buyer persona, Geography, Industry vertical, Primary use case, Description, Pain points, Evidence proof points, Target buyer

Technology focused
Yes
API detail
Has APIbool
No

Docs URL, Description

AI maturity
App detail

Has app

Feature3 records

Each record includes

Title, Differentiator, Description, Source

Core technology
Revenue estimate
Valuation estimate
Number of profiles
Profiles10 records

Each record includes

Name, Designation, Designation category, Overview, Profile commentary, Source

No data
No data
Funding overview

Funding stage, Last funding date, Total funding USD

Funding rounds6 records

Each record includes

Round, Amount USD, Date, Pre money valuation, Total investors, Investors, News

Investors18 records

Each record includes

Name, Type, Date of entry, Rounds participated, Website

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A1 record

Each record includes

Name, Acquisition type, Announced date, Completed date, Status, Website, News

Investment

Each record includes

Name, Round, Announced date, Lead investor, Website, News

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

VYNE Therapeutics

Immuno-inflammatory Therapeuticsvynetherapeutics.com

VYNE Therapeutics is a clinical-stage biopharmaceutical company developing BET inhibitor therapies (Repibresib, VYN202) for immuno-inflammatory diseases, with no commercial revenue beyond LEO Pharma royalties and a pending all-stock merger into Yarrow Bioscience (expected to close Q2 2026).

What VYNE Therapeutics does

VYNE Therapeutics is a clinical-stage biopharmaceutical company developing proprietary therapies for immuno-inflammatory conditions through its InhiBET BET Inhibitor Platform, which targets bromo-domain and extra-terminal domain (BET) proteins involved in regulation of inflammatory and oncogenic genes. The pipeline consists of two candidates licensed from Tay Therapeutics: Repibresib (VYN201), a locally administered pan-BD BET inhibitor gel being developed primarily for nonsegmental vitiligo; and VYN202, an oral BD2-selective BET inhibitor for immune-mediated diseases including plaque psoriasis. In July 2025, Repibresib's Phase 2b vitiligo trial did not meet its primary or key secondary endpoints, and in April 2025 the FDA placed a clinical hold on VYN202's Phase 1b psoriasis trial following observed testicular toxicity in dogs (partially lifted for female patients).

The company has no commercial products and minimal operating revenue, consisting almost entirely of royalty payments from LEO Pharma on the licensed Finacea foam franchise (~$0.2 million per quarter). With $39.6 million in cash as of June 30, 2025, VYNE has limited standalone runway. In December 2025, VYNE announced an all-stock merger with Yarrow Bioscience valued at approximately $200 million, expected to close in Q2 2026, under which pre-merger VYNE stockholders will retain only ~3% of the combined entity, which will operate as Yarrow Bioscience (ticker YARW) and focus on YB-101 for Graves' disease and thyroid eye disease. The combined company is expected to be funded into 2028 by ~$200 million in pre-closing private financings led by RTW Investments.

VYNE Therapeutics firmographics

Firmographics
Name
VYNE Therapeutics
Legal name
VYNE Therapeutics Inc.
Website
https://vynetherapeutics.com
Company type
Public
Founded year
2019
Operating status
Operating
Headcount range
11–50 employees
Short description
VYNE Therapeutics is a clinical-stage biopharmaceutical company developing BET inhibitor therapies (Repibresib, VYN202) for immuno-inflammatory diseases, with no commercial revenue beyond LEO Pharma royalties and a pending all-stock merger into Yarrow Bioscience (expected to close Q2 2026).
Ownership category
akta.pro rank

VYNE Therapeutics industry classification

Industry
Product category
Immuno-inflammatory Therapeutics
NAICS
Research and Development in Biotechnology (except Nanobiotechnology) (541714)
SIC
Pharmaceutical Preparations (2834), Biological Products, (No Disgnostic Substances) (2836)
akta.pro primary industry
Immunology & Inflammation Pharmaceuticals (HLAIAAAD)
akta.pro secondary industries
Immunology & Autoimmune Specialty Pharmaceuticals (HLAIACAB), Endocrinology & Reproductive Health Pharmaceuticals (incl. Women’s Health) (HLAIAAAJ)

Keywords

  • BET inhibitor therapeutics
  • Immuno-inflammatory treatments
  • Clinical-stage biopharmaceutical
  • Dermatology drug development
  • Small molecule therapies

Where VYNE Therapeutics is headquartered

Location

Headquarters

HQ city
Menlo Park
HQ country
United States
HQ region
North America

Offices2 records

Markets served

VYNE Therapeutics business model

Business model
GTM type
B2B
Offering type
Hardware or Manufacturing
Cost components
Technology or R&D, Personnel, Operations, Others

Revenue model

  1. Royalty Revenue: VYNE receives royalty revenue from its licensing agreement with LEO Pharma for Finacea foam. Royalty revenues were approximately $0.2 million per quarter in 2025.
  2. Merger with Yarrow Bioscience: VYNE agreed to merge with Yarrow Bioscience in an all-stock transaction valued at approximately $200 million. Pre-closing financings of approximately $200 million are expected to fund operations into 2028. The combined company will focus on YB-101 for Graves' disease and thyroid eye disease.

Go-to-market motion1 record

Distribution channels2 records

Marketing channels5 records

VYNE Therapeutics product offering

Product offering

Core offering

VYNE Therapeutics is a clinical-stage biopharmaceutical company developing proprietary BET (bromo-domain and extra-terminal domain) inhibitor therapies for immuno-inflammatory conditions. Its lead candidates are Repibresib (VYN201), a topical pan-BD BET inhibitor gel for nonsegmental vitiligo, and VYN202, an oral BD2-selective BET inhibitor for plaque psoriasis and other autoimmune diseases. All assets are investigational; the company currently generates de minimis revenue from a Finacea foam royalty arrangement with LEO Pharma.

Product overview

VYNE Therapeutics is a clinical-stage biopharmaceutical company developing differentiated therapies for immuno-inflammatory conditions. The company's core technology is the proprietary InhiBET™ BET Inhibitor Platform, which includes two drug candidates: Repibresib (VYN201), a locally-administered pan-BD BET inhibitor gel for vitiligo, and VYN202, an oral BD2-selective BET inhibitor for immune-mediated diseases. VYNE is currently undergoing a merger with Yarrow Bioscience to shift focus toward autoimmune thyroid diseases, with the combined company planned to trade as Yarrow Bioscience under ticker YARW.

Differentiator

Problem solved

Functional benefit

Brands

  • InhiBET: BET (bromo-domain and extra-terminal domain) inhibitor platform technology for developing therapies targeting immuno-inflammatory diseases.

Products and services

  • Repibresib (VYN201) Locally administered pan-BD BET inhibitor designed as a 'soft drug' for diseases involving multiple inflammatory cell signaling pathways with low systemic exposure; lead indication is nonsegmental vitiligo.
  • VYN202 Oral small molecule BD2-selective BET inhibitor designed for class-leading BD2 vs BD1 selectivity, maximum potency against BD2, and optimized oral bioavailability; in development for plaque psoriasis and other immune-mediated diseases.

Quantifiable outcome

  • Phase 2b vitiligo trial: Repibresib 3% showed -43.6% change from baseline in F-VASI vs -25.6% for vehicle (p=0.0020)
  • +1 more outcomes

Companies that use VYNE Therapeutics

Customer profile

Segments3 records

Ideal customer profiles3 records

VYNE Therapeutics technology and API

Technology

Technology focussed Yes

API detail

Has API
No
API docs
API detail

Core technology

AI maturity

App detail

Feature3 records

VYNE Therapeutics partnerships and signals

Strategic signal

Partnerships

Four partnerships are on record, tiered core, minor and major.

  • Yarrow BiosciencecoreStrategic or Co-development Partner · 17 December 2025VYNE agreed to merge with Yarrow Bioscience in an all-stock transaction valued at approximately $200 million. Following closing, the combined company will focus on advancing YB-101, a potentially first-in-class anti-TSHR antibody for Graves' disease and thyroid eye disease. Pre-closing financings of approximately $200 million led by RTW Investments are expected to fund operations into 2028.
  • LEO PharmaminorChannel Partner/ Reseller/ DistributorVYNE previously licensed rights to Finacea foam to LEO Pharma A/S. VYNE receives royalty revenue from this agreement, generating approximately $0.2 million per quarter.
  • Changchun GeneScience Pharmaceutical Co., Ltd (GenSci)majorStrategic or Co-development PartnerGenSci is conducting a Phase 1 trial evaluating YB-101 in patients with thyroid eye disease (TED) in China. Yarrow executed an exclusive license agreement with Shanghai Scizeng Medical Technology Co., Ltd (an affiliate of GenSci) to obtain global ex-China rights to develop GS-098 in Graves' disease and TED.
  • Tay Therapeutics LimitedcoreTechnology or IntegrationVYNE licensed VYN201 and VYN202 from Tay Therapeutics Limited. The VYN202 License Agreement involved a one-time cash payment of $3.75 million in April 2023, with additional development milestone payments including $1.0 million upon initiation of Phase 2b trial for VYN201 and $1.0 million upon initiation of Phase 1a SAD/MAD trial for VYN202.

Scale indicators9 records

Recent moves6 records

Expansion highlights5 records

VYNE Therapeutics competitors and assessment

Company assessment

Market position

Competitive moat3 records

Key risks5 records

Key highlights6 records

Customer concentration

VYNE Therapeutics social profiles

Digital presence

VYNE Therapeutics financial estimates

Financial estimate

Revenue estimate

Valuation estimate

VYNE Therapeutics leadership team

Management profile

Number of profiles

Profiles10 records

VYNE Therapeutics funding detail

Funding detail

Funding overview

Funding rounds6 records

Investors18 records

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

VYNE Therapeutics M&A and investment

M&A and investment

M&A1 record

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about VYNE Therapeutics

What does VYNE Therapeutics do?

VYNE Therapeutics is a clinical-stage biopharmaceutical company developing proprietary BET (bromo-domain and extra-terminal domain) inhibitor therapies for immuno-inflammatory conditions. Its lead candidates are Repibresib (VYN201), a topical pan-BD BET inhibitor gel for nonsegmental vitiligo, and VYN202, an oral BD2-selective BET inhibitor for plaque psoriasis and other autoimmune diseases. All assets are investigational; the company currently generates de minimis revenue from a Finacea foam royalty arrangement with LEO Pharma.

Is VYNE Therapeutics a public or private company?

VYNE Therapeutics is a public company. It is classified as public and is currently operating.

When was VYNE Therapeutics founded?

VYNE Therapeutics was founded in 2019. It employs 11 to 50 people.

Where is VYNE Therapeutics based?

VYNE Therapeutics is headquartered in Menlo Park, United States, in the North America region.

How does VYNE Therapeutics make money?

Two revenue lines are on record. Royalty Revenue is the primary driver. The others are merger with Yarrow Bioscience.

Does VYNE Therapeutics have an API?

No public API is recorded for VYNE Therapeutics.

What industry is VYNE Therapeutics in?

VYNE Therapeutics's product category is Immuno-inflammatory Therapeutics. Its primary akta.pro industry code is HLAIAAAD, Immunology & Inflammation Pharmaceuticals, with a secondary code of HLAIACAB, Immunology & Autoimmune Specialty Pharmaceuticals. Its NAICS code is 541714 and its SIC code is 2834.

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Live signals
Hartford Business JournalNew Haven biotech goes public after merger, raises $200MYarrow Bioscience Inc. has raised approximately $200 million through private financings and initiated mid-stage clinical trials for its lead drug candidate, YB-101, following a reverse merger with VYNE Therapeutics Inc. in late July. The company, which began trading on the Nasdaq under the ticker YARW, reported a second-quarter net loss of $6.5 million as it funds operations into 2028.BioSpaceYarrow Bioscience Reports Second Quarter 2026 Financial Results and Provides Business UpdateYarrow Bioscience reported Q2 2026 results with a $6.5M net loss and $18.7M cash, and initiated its Phase 2a/2b trial of YB-101 for Graves' disease. The company expects Phase 2a topline data in the second half of 2027 and plans to fund operations into 2028.Business Wire BlogYarrow Bioscience Reports Second Quarter 2026 Financial Results and Provides Business UpdateYarrow Bioscience reported its financial results for the second quarter of 2026, including the initiation of a Phase 2a/2b trial for YB-101, a potential first-in-class anti-TSHR antibody for treating Graves’ disease and thyroid eye disease. The company completed a merger with VYNE Therapeutics, secured $200 million in private financing, and is now trading under the Nasdaq ticker 'YARW'. Phase 2a topline results are anticipated in the second half of 2027, positioning Yarrow for future advancements in its drug development efforts.BioSpaceYarrow Bioscience Announces Closing of Merger with VYNE Therapeutics and Initiation of Dosing in Phase 2a/2b Trial of YB-101, a Potential First-in-Class Treatment for Graves’ Disease and Thyroid Eye DYarrow Bioscience completed its merger with VYNE Therapeutics and initiated dosing in a Phase 2a/2b trial of YB-101 for Graves' disease. The combined company will trade on Nasdaq under 'YARW' with $200 million in private financings funding operations into 2028. Phase 2a data are expected in H2 2027.MarketScreenerYarrow Bioscience Completes VYNE Therapeutics Merger, Begins Phase 2 Trial Dosing for YB-101Yarrow Bioscience has completed its merger with VYNE Therapeutics Inc., consolidating the two clinical-stage biopharmaceutical companies focused on developing treatments for chronic inflammatory and immune-mediated conditions. The combined entity has begun Phase 2 trial dosing for its lead compound, an oral small molecule BD2-selective BET inhibitor designated as YB-101 (also referred to as VYN202 in company materials). The merger brings together VYNE's InhiBET platform and preclinical/clinical capabilities to advance BET inhibitor compounds targeting unmet medical needs in inflammatory conditions.YahooYarrow Bioscience Completes VYNE Therapeutics Merger, Begins Phase 2 Trial Dosing for YB-101Yarrow Bioscience announced the completion of its merger with VYNE Therapeutics on Monday, forming a combined entity in the pharmaceutical sector. The merged company has initiated Phase 2 clinical trial dosing for YB-101, representing a key milestone in advancing the drug candidate through clinical development. The full details of the transaction and clinical trial specifics are not available in this preview.YahooYarrow Bioscience Announces Closing of Merger with VYNE Therapeutics and Initiation of Dosing in Phase 2a/2b Trial of YB-101, a Potential First-in-Class Treatment for Graves’ Disease and Thyroid Eye DYarrow Bioscience completed its merger with VYNE Therapeutics and closed approximately $200 million in private financing, with the combined company beginning to trade on Nasdaq under the ticker symbol YARW on July 28, 2026. The company's lead candidate YB-101, a potential first-in-class anti-TSHR antibody for Graves' disease and thyroid eye disease, has initiated dosing in a Phase 2a/2b trial following FDA Fast Track Designation, with Phase 2a data expected in the second half of 2027. Partner GenSci is also conducting Phase 1 trials in China, with MAD trial data for thyroid eye disease anticipated in the same timeframe.Business Wire BlogYarrow Bioscience Announces Closing of Merger with VYNE Therapeutics and Initiation of Dosing in Phase 2a/2b Trial of YB-101, a Potential First-in-Class Treatment for Graves’ Disease and Thyroid Eye DYarrow Bioscience completed its merger with VYNE Therapeutics and began trading on Nasdaq under ticker symbol "YARW" on July 28, 2026, accompanied by approximately $200 million in private financings to fund operations into 2028. The company's lead candidate YB-101, a potential first-in-class anti-TSHR monoclonal antibody for Graves' disease and thyroid eye disease, has initiated dosing in a Phase 2a/2b clinical trial following FDA Fast Track Designation, with Phase 2a data expected in the second half of 2027. Yarrow's licensing partner GenSci is simultaneously conducting Phase 1 trials for YB-101 in China, where proof-of-mechanism and clinical response evidence have already been demonstrated in the single ascending dose portion of the thyroid eye disease trial.FinancialContent Business PageYarrow Bioscience Announces Closing of Merger with VYNE Therapeutics and Initiation of Dosing in Phase 2a/2b Trial of YB-101, a Potential First-in-Class Treatment for Graves’ Disease and Thyroid Eye DYarrow Bioscience completed its merger with VYNE Therapeutics and associated private financings totaling approximately $200 million, with the combined company beginning trading on Nasdaq under the ticker symbol YARW on July 28, 2026. The company's lead candidate YB-101, a potential first-in-class anti-TSHR antibody for Graves' disease and thyroid eye disease, has received FDA Fast Track Designation and initiated dosing in a Phase 2a/2b clinical trial, with Phase 2a data expected in the second half of 2027. Yarrow's licensing partner GenSci is simultaneously evaluating YB-101 in China, where Phase 1 SAD data demonstrated rapid dose-dependent proof-of-mechanism and clinical responses with a favorable safety profile.YarrowbioscienceYarrow Bioscience Announces Closing of Merger with VYNE Therapeutics and Initiation of Dosing in Phase 2a/2b Trial of YB-101, a Potential First-in-Class Treatment for Graves’ Disease and Thyroid Eye DYarrow Bioscience completed its merger with VYNE Therapeutics and initiated dosing in a Phase 2a/2b trial of YB-101 for Graves' disease. The combined company will trade on Nasdaq under 'YARW' with $200 million in private financings funding operations into 2028. Phase 2a data is expected in H2 2027.