Last reviewed · How we verify

Chidamide+ Fulvestrant

Liaoning Cancer Hospital & Institute · FDA-approved active Small molecule ✓ Verified Jun 2026

Chidamide+ Fulvestrant is a HDAC inhibitor + selective estrogen receptor degrader (combination therapy) Small molecule drug developed by Liaoning Cancer Hospital & Institute. It is currently FDA-approved for Estrogen receptor-positive, HER2-negative breast cancer.

Chidamide inhibits histone deacetylases to reactivate tumor suppressor genes, while fulvestrant blocks estrogen receptor signaling to inhibit hormone-dependent breast cancer growth.

Chidamide is a small molecule used in targeted therapy for breast cancer. It is being studied in combination with Fulvestrant for the treatment of hormone receptor-positive (HR+)/human epidermal growth factor receptor 2-negative (HER2-) advanced breast cancer.

At a glance

Generic nameChidamide+ Fulvestrant
SponsorLiaoning Cancer Hospital & Institute
Drug classHDAC inhibitor + selective estrogen receptor degrader (combination therapy)
TargetHistone deacetylases (HDAC) + Estrogen receptor alpha (ERα)
ModalitySmall molecule
Therapeutic areaOncology
PhaseFDA-approved

Mechanism of action

Chidamide is a histone deacetylase (HDAC) inhibitor that promotes acetylation of histones, leading to chromatin remodeling and reactivation of silenced tumor suppressor genes. Fulvestrant is a selective estrogen receptor degrader (SERD) that binds to and degrades the estrogen receptor, eliminating estrogen-dependent signaling. The combination targets both epigenetic regulation and hormone-driven proliferation in estrogen receptor-positive breast cancer.

Approved indications

Common side effects

Key clinical trials

Primary sources

Every claim on this page is sourced from regulatory or scientific primary sources. See our editorial policy for full methodology.

SourceUsed for
ClinicalTrials.govTrial enrolment, design, endpoints, results

Competitive intelligence

For the full competitive landscape — auto-detected comparators, recent regulatory actions across the set, upcoming PDUFA, patent timeline, sponsor landscape:

Frequently asked questions about Chidamide+ Fulvestrant

What is Chidamide+ Fulvestrant?

Chidamide+ Fulvestrant is a HDAC inhibitor + selective estrogen receptor degrader (combination therapy) drug developed by Liaoning Cancer Hospital & Institute, indicated for Estrogen receptor-positive, HER2-negative breast cancer.

How does Chidamide+ Fulvestrant work?

Chidamide inhibits histone deacetylases to reactivate tumor suppressor genes, while fulvestrant blocks estrogen receptor signaling to inhibit hormone-dependent breast cancer growth.

What is Chidamide+ Fulvestrant used for?

Chidamide+ Fulvestrant is indicated for Estrogen receptor-positive, HER2-negative breast cancer.

Who makes Chidamide+ Fulvestrant?

Chidamide+ Fulvestrant is developed and marketed by Liaoning Cancer Hospital & Institute (see full Liaoning Cancer Hospital & Institute pipeline at /company/liaoning-cancer-hospital-institute).

What drug class is Chidamide+ Fulvestrant in?

Chidamide+ Fulvestrant belongs to the HDAC inhibitor + selective estrogen receptor degrader (combination therapy) class. See all HDAC inhibitor + selective estrogen receptor degrader (combination therapy) drugs at /class/hdac-inhibitor-selective-estrogen-receptor-degrader-combination-therapy.

What development phase is Chidamide+ Fulvestrant in?

Chidamide+ Fulvestrant is FDA-approved (marketed).

What are the side effects of Chidamide+ Fulvestrant?

Common side effects of Chidamide+ Fulvestrant include Thrombocytopenia, Nausea, Fatigue, Diarrhea, Hot flashes.

What does Chidamide+ Fulvestrant target?

Chidamide+ Fulvestrant targets Histone deacetylases (HDAC) + Estrogen receptor alpha (ERα) and is a HDAC inhibitor + selective estrogen receptor degrader (combination therapy).

Related

Primary sources · FDA · ClinicalTrials.gov · EMA · SEC EDGAR · ChEMBL · Wikidata · full sourcing