Brand Name

Inluriyo

Generic Name
Imlunestrant
View Brand Information
FDA approval date: September 25, 2025
Classification: Estrogen Receptor Antagonist
Form: Tablet

What is Inluriyo (Imlunestrant)?

INLURIYO is indicated for the treatment of adults with estrogen receptor -positive, human epidermal growth factor receptor 2 -negative, estrogen receptor-1 -mutated advanced or metastatic breast cancer with disease progression following at least one line of endocrine therapy. INLURIYO TM is an estrogen receptor antagonist indicated for: treatment of adults with ER-positive, HER2-negative, ESR1 -mutated advanced or metastatic breast cancer with disease progression following at least one line of endocrine therapy

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Brand Information

Inluriyo (imlunestrant)
1INDICATIONS AND USAGE
INLURIYO is indicated for the treatment of adults with estrogen receptor (ER)-positive, human epidermal growth factor receptor 2 (HER2)-negative,
2DOSAGE FORMS AND STRENGTHS
INLURIYO tablets contain 200 mg imlunestrant and are white, film coated-capsule-shaped tablets, with “LILLY” on one side and “1717” and elongated 4-point starburst on the other side.
3CONTRAINDICATIONS
None.
4DESCRIPTION
INLURIYO tablets contain imlunestrant, an estrogen receptor antagonist. The chemical name for imlunestrant tosylate is (5R)-5-(4-(2-(3-(flouromethyl)azetidin-1-yl)ethoxy)phenyl)-8-(trifluoromethyl)-5H-(
Chemical Structure
INLURIYO are tablets for oral administration. Each INLURIYO tablet is available as capsule-shaped, film-coated tablet that contains 200 mg imlunestrant (equivalent to 265.66 mg imlunestrant tosylate). The tablet contains the following inactive ingredients: croscarmellose sodium, hydroxypropyl cellulose, magnesium stearate, and microcrystalline cellulose. The tablets are coated using a common white coating, which consists of polyethylene glycol, polyvinyl alcohol, talc, and titanium dioxide.
5CLINICAL STUDIES
The efficacy of INLURIYO was evaluated in EMBER-3 (NCT04975308), a randomized, open-label, active-controlled, multicenter trial that enrolled 874 adult patients with ER+, HER2- locally advanced or metastatic breast cancer, who were previously treated with an aromatase inhibitor either alone or in combination with a CDK4/6 inhibitor. Patients were excluded if they were eligible to receive a PARP inhibitor. Patients were required to have progressed:
  • Within 12 months of completing neoadjuvant or adjuvant aromatase inhibitor therapy with no systemic treatment for recurrent disease or
  • Greater than 12 months after neoadjuvant or adjuvant endocrine therapy or de novo metastatic disease and had progressed on only one line of aromatase inhibitor therapy.
Patients were randomized 1:1:1 to INLURIYO 400 mg orally once daily; or investigator's choice of endocrine therapy [fulvestrant 500 mg IM on days 1, 15, 29, and once monthly thereafter (n=111) or exemestane 25 mg orally once daily (n=6)]; or an additional investigational combination regimen. Randomization was stratified by previous treatment with CDK4/6 inhibitor (yes vs no), presence of visceral metastasis (yes vs no), and region (East Asia vs North America/Western Europe vs Others).
The major efficacy outcome was investigator assessed progression-free survival (PFS) according to RECIST v1.1. Other efficacy measures included overall survival (OS), blinded independent review committee (BIRC)-assessed PFS, and objective response rate (ORR).
Among the patients on the INLURIYO arm or investigator's choice of endocrine therapy who were positive for
The efficacy results from these patients are summarized in
Figure 1: Kaplan-Meier Plot of Investigator-Assessed PFS for Patients with ESR1m, Treated with INLURIYO or Fulvestrant/Exemestane in EMBER-3
Figure 1
6PATIENT COUNSELING INFORMATION
Advise patients to read the FDA-approved patient labeling (Patient Information).
7PACKAGE LABEL – Inluriyo 200 mg 56 count bottle
NDC 0002-1717-56
Rx only
Inluriyo
(imlunestrant) tablets
200 mg
56 tablets
Lilly
PACKAGE LABEL – Inluriyo 200 mg 56 count bottle