TFA-01 | Nonsteroidal drug development for canine osteoarthritisView development progress

Recent Major Announcements

TFA’s China Licensee HuanZhang Enters Shanghai Pharma’s Supply Chain

TFA’s China licensee HuanZhang has entered Shanghai Pharma’s Antrodia camphorata raw-material supply chain and, as of September 18, 2026, was the program’s only qualified supplier, adding quality and supply-chain experience relevant to TFA-01 development in China.

Read the full release

TFA Reports Completion of Preliminary 14-Day TF-15 Rat Study

TFA completed a preliminary 14-day repeat-dose study of TF-15 in rats, with the summary report signed on July 2, 2026. The company is continuing safety, toxicology, and formulation research to support TFA-01.

Read the full release

01 · Therapeutic Rationale & Scientific Evidence

Corticosteroids have well-established therapeutic value, but the challenges of repeated or prolonged use create demand for new treatments. TFA-01 is an Antcin A-based drug candidate being studied for its potential to provide anti-inflammatory activity with an improved long-term benefit-risk profile.

Antcin AAntcin A · 3D structure
PubChemComputed conformer
Schematic of the Antcin A molecular structure

Preparing interactive model

CarbonOxygen
Drag to rotate · Scroll to zoom
Use arrow keys to rotate and + / − to zoom.
Model data

This model uses a computed conformer from PubChem (NCBI/NLM/NIH), CID 10004121; CAS 163597-24-8, molecular formula C₂₉H₄₂O₄. The source record does not specify the stereochemistry at C25; this view shows one computed conformer. PubChem ↗

Treatment Need

Long-term treatment requires more than efficacy alone

Chronic inflammatory conditions require ongoing management. TFA aims to develop a new treatment option and evaluate its potential for repeated use.

Published Research

Antcin A offers a scientific starting point

A 2011 cell study reported that Antcin A induced nuclear translocation of the glucocorticoid receptor (GR)—movement of the receptor from the cytoplasm into the nucleus.

Read the original study
Company Research

Advancing published findings through TFA’s research program

Preliminary in vitro research by Dr. Huang’s team observed anti-inflammatory signals, supporting further work on dosing, formulation, safety, and canine OA.

GR nuclear translocation and in vitro findings support further development; potential as an alternative to corticosteroids requires validation in formal studies.

Explore the scientific evidence

From molecular insight to a drug development asset

TFA-01: Drug development centered on Antcin A

Translating scientific findings into an investigational product requires coordinated work on dosing, formulation, safety, and clinical evidence. Canine OA is the lead indication, with other chronic inflammatory conditions to be evaluated over time.

Candidate molecule
Antcin A
Lead indication
Canine osteoarthritis
Development approach
Nonsteroidal
View development View the full development timeline

02 · Initial Market & Lead Indication

Companion animal health, starting with canine osteoarthritis

Companion animal health is TFA’s initial commercial focus. Within that market, canine osteoarthritis (OA) is the starting point for research and product development.

Initial Market

Companion animal health

Pet owners’ demand for pain relief and better quality of life supports an ongoing treatment market. A phased veterinary-drug development plan helps align research milestones with funding needs.

Lead Indication

Canine osteoarthritis

Canine OA requires long-term management, with pain and mobility providing measurable outcomes. Studies will evaluate efficacy, repeat-dose safety, and appropriate dosing and treatment duration.

Canine OA studies are intended to build the evidence base for the lead indication. Feline chronic gingivostomatitis and dermatitis will be evaluated separately in subsequent research.

03 · Development Progress

Each study informs the next development step

Building on scientific findings and exploratory data, five development workstreams are generating the evidence needed for formal studies, product quality, and regulatory submissions.

01

Molecule, mechanism & rights

Published research foundation / program validation underway

Published studies support GR/GRα-related signaling by Antcin A in defined models. TFA is assessing how those findings apply to its current test articles, batches and canine OA development program.

Next milestoneComplete candidate test-article and batch definition and strengthen program-level pharmacology relevant to canine osteoarthritis.View progress details
02

CMC & controlled supply

Sourcing foundation in place / specifications and batch bridging underway

Research on strains from multiple sources and their Antcin A content supports controlled cultivation, strain selection, purification, analytical testing and formulation development.

Next milestoneComplete physicochemical validation of the nanoformulation, then advance formal specifications, batch consistency and process scale-up.View progress details
03

Safety & toxicology

Preliminary 14-day repeat-dose study completed | Formal studies advancing

A 14-day repeat-dose preliminary toxicology study in female rats is complete and a report is available to inform later study design. The Graduate Institute of Animal Vaccine Technology is advancing target-animal safety, toxicology, residue and formulation-related research.

Next milestoneComplete the subsequent regulatory toxicology reports and establish the safe dose range for the purified candidate drug substance and final product under this development program.View progress details
04

Canine OA clinical development

First-stage agreement signed / preliminary cell testing underway

TFA completed uncontrolled exploratory observations in 15 dogs. The first-stage canine osteoarthritis research agreement has been signed, and preliminary cell-based testing is underway ahead of a standardized study.

Next milestoneComplete the canine OA study under a protocol with prespecified endpoints and a statistical analysis plan, and prepare the study report.View progress details
05

Regulatory strategy & commercialization

Taiwan advancing / U.S. CVM planning

TFA is assembling data for a veterinary drug application in Taiwan and planning its U.S. CVM strategy. Partnership and licensing opportunities will be evaluated as the supporting data develop.

Next milestoneObtain regulatory feedback on study design, process specifications and remaining data gaps, then develop a submission plan.View progress details

04 · Technology & Supply Capabilities

Reliable supply enables sustained research on a rare molecule

Developing a naturally occurring active compound requires a dependable source of research material. TFA combines HPF (Hyphal Pairing & Fusion), quantitative screening, and cultivation processes to establish that supply foundation.

Core Strains

TFA-HPF™ Hyphal Pairing & Fusion

Compatible hyphal pairings are established, then screened by quantitative analysis to select strains with high Antcin A yields for cultivation and scale-up.

Research Supply

Approximately 2.5 kg per year

Estimated Antcin A content equivalent in material from current Taiwan cultivation capacity, supporting multiple research batches, formulation development, and quality comparisons.

Technology Protection

Cultivation patents in four jurisdictions

Relevant cultivation patents in Taiwan, China, Japan, and the United States complement strain selection and cultivation processes as part of TFA’s technology foundation.

TFA-HPF™ · Hyphal Pairing & Fusion

Developing strains with high Antcin A yields

HPF provides strains for ongoing cultivation and research. It supports TFA’s supply capabilities alongside cultivation processes, quality analysis and downstream processing.

Hyphal pairing & fusion schematicTFA-HPF™
HPF Petri dish image showing contact between multiple mycelial colonies
Hypha 1Hypha 2Hypha 3
Fusion bridges
01Hyphal Pairing & Fusion

Establish compatible hyphal pairings as the starting point for strain development.

Actual culture-plate photo; numbers and animation illustrate hyphal pairing and fusion.

HPF and the cultivation patents in four jurisdictions are presented separately. The granted patent claims define the scope of protection.

The supply estimate represents Antcin A content equivalent within cultivated material. Purified API and final injectable-product output require separate process and quality validation.

Explore HPF and supply capabilities

05 · Commercialization & Company Value

Building a path to product and partnership revenue

As research and regulatory work advance, TFA plans to pursue commercialization through product sales, regional licensing, and co-development across markets.

Taiwan

Product sales

Build on the lead product program and veterinary distribution channels to launch sales after obtaining the required approvals.

China & Regional Markets

Regional licensing

Work with regional partners on regulatory submissions and commercialization, with potential licensing fees, milestone payments, or royalties under the relevant agreements.

United States & Other Markets

Co-development

Combine partners’ research, regulatory, and market capabilities to share development responsibilities and the resulting value.

OTCQBU.S. OTC market
RAJAFTrading symbol
4 jurisdictionsGranted platform-related patents
Since 2020Annual audits by a PCAOB-registered firm

TFA CORPORATE FILM

TFA’s science, development and global strategy—in four minutes

An introduction to the scientific basis for Antcin A, TFA-01’s five development workstreams and the company’s public-market reporting framework.

03:57 · Chinese narration · Chinese and English subtitles
TFA leadership team, with Vincent Liu on the left and Dalan Huang on the right

LEADERSHIP

Core operating team

Dalan Huang黃思豪Co-Founder & President
Vincent Liu劉彥泓Co-Founder & CTO

Two co-founders directly lead corporate management and technology development.

Meet our leadership

LATEST UPDATES

Company updates

Visit newsroom

INVESTOR RELATIONS

Advancing drug development with public-company transparency

TFA Therapeutics, Inc. is an SEC-reporting foreign private issuer quoted on OTCQB as RAJAF.

Advance nonsteroidal anti-inflammatory drug development with TFA

We welcome animal-health, pharmaceutical, clinical, CMC, regulatory and long-term investment partners.

Contact TFA