Last Update: Aug 19, 2026
A Multicenter, Randomized, Double-blind, Placebo-controlled, Dose-ranging Phase IIb Study to Assess the Efficacy and Safety of GIA632 in Adult Participants With Non-segmental Vitiligo Followed by an Extension Period
ClinicalTrials.gov Identifier:
Novartis Reference Number:CGIA632B12201
All compounds are either investigational or being studied for (a) new use(s). Efficacy and safety have not been established. There is no guarantee that they will become commercially available for the use(s) under investigation.

Study Description

The main purpose of this multicenter, randomized, double-blind, placebo-controlled Phase 2b study is to investigate the safety and efficacy of GIA632 in participants with NSV and to identify the optimal dose to be promoted into the confirmatory Phase 3 program. This trial in adult participants ≥ 18 years with non-segmental vitiligo (NSV) consists of a randomized, double-blind, placebo-controlled period to establish and characterize the dose-response relationship of GIA632 and estimate the targeted doses treatment effect compared with placebo, followed by the assessment of longer term safety and efficacy in extension period.

Non-segmental Vitiligo
Phase2
Recruiting
210
Mar 09, 2026
Jan 28, 2030
All
18 Years - 99 Years (Adult, Older Adult)

Interventions

Drug

GIA632

GIA632 will be administered during the 48-week core period.
Drug

Placebo

Placebo will be administered during the 48-week core period.

Eligibility Criteria

Inclusion Criteria:

* Signed informed consent must be obtained prior to participation in the study
* Male or female as assigned at birth ≥ 18 years of age at the time of screening
* Individuals with a diagnosis of non-segmental vitiligo and confirmation of diagnosis through physical examination by the investigator
* Non-segmental vitiligo, as assessed at screening, as
* ≥ 0.5% Body Surface Area (BSA) on the face and F-VASI score ≥ 0.5
* ≥ 3% BSA on non-facial areas (minimum of 3% should be calculated in addition to hands and feet) and T-VASI score = 3 to 60

Exclusion Criteria:

* Individuals unable or unwilling to follow the study procedures and/or to complete the study-related questionnaires
* Presence of segmental or mixed vitiligo, or other skin comorbidities that may interfere with study assessments (e.g., hypopigmented mycosis fungoides, genetic diseases with pigmentary aberrations \[such as piebaldism, Waardenburg, etc.\], chemical- or druginduced leukoderma, etc.)
* Previous exposure to biologic drugs directly targeting IL-15 or IL-15 receptors
* Individual who previously attempted or completed depigmentation therapy for NSV
* Use of prohibited medication \& treatments. Other protocol-defined inclusion/exclusion criteria may apply

Novartis Investigative Site

Recruiting

Caba,Buenos Aires,C1119acn,Argentina

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Sydney,New South Wales,2010,Australia

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Waitara,New South Wales,2077,Australia

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Melbourne,Victoria,3000,Australia

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Winnipeg,Manitoba,R3m 3z4,Canada

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Newmarket,Ontario,L3y 5g8,Canada

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Calgary,Alberta,T2j 7e1,Canada

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Toronto,Ontario,M3h 5y8,Canada

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Québec,Quebec,G1v 4x7,Canada

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Mississauga,Ontario,L4y 4c5,Canada

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Guangzhou,Guangdong,510091,China

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Shanghai,200040,China

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Beijing,100050,China

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Wuhan,Hubei,430022,China

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Brest,29609,France

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Rouen,76031,France

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Reims,51100,France

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Nice,06202,France

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Créteil,94010,France

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Bordeaux,33075,France

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Toulouse,31400,France

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Hanover,30625,Germany

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Munich,Bavaria,81377,Germany

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Bad Bentheim,48455,Germany

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Hamburg,20354,Germany

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Münster,48149,Germany

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Lübeck,23538,Germany

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Bielefeld,33647,Germany

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Tübingen,72076,Germany

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Ahmedabad,Gujarat,380016,India

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Nashik,Maharashtra,422101,India

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Belagavi,Karnataka,590010,India

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Mysore,Karnataka,570001,India

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Bangalore,Karnataka,560074,India

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Ancona,AN,60020,Italy

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Rozzano,MI,20089,Italy

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Milan,MI,20122,Italy

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Cona,FE,44124,Italy

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Urayasu,Chiba,279-0021,Japan

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Nagoya,Aichi-ken,4678602,Japan

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Kofu,Yamanashi,400-8506,Japan

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Niigata,9518520,Japan

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Amsterdam,North Holland,1105 az,Netherlands

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Rotterdam,South Holland,3015 gd,Netherlands

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Barcelona,08041,Spain

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Seville,41009,Spain

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Santiago de Compostela,A Coruna,15706,Spain

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Córdoba,14004,Spain

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Madrid,28006,Spain

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Madrid,28041,Spain

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Pontevedra,36003,Spain

Clinical Trials Research Institute

Recruiting

Thousand Oaks,California,91320,United States

Shawn Ahoubim
Navid Ezra

Equity Medical

Recruiting

The Bronx,New York,10455,United States

Michael Cameron
Luana Cabreja

Las Vegas Dermatology

Recruiting

Las Vegas,Nevada,89144,United States

Harry Lawrence Greenberg
Faith Limon

Skin Specialists PC

Recruiting

Omaha,Nebraska,68144,United States

Schyler Schriever
Joel Schlessinger

Hamzavi Dermatology

Recruiting

Fort Gratiot,Michigan,48059,United States

Lee Campbell
Iltefat Hamzavi

Dawes Fretzin Clinical Rea Group

Recruiting

Indianapolis,Indiana,46256,United States

Michelle Riggs
Kenneth Dawes

Center for Clinical Studies

Recruiting

Houston,Texas,77030,United States

Perla Rivas
Stephen K Tyring

Austin Inst for Clinical Research

Recruiting

Pflugerville,Texas,78660,United States

Tolga Han
Edward Lain

Miami Derm and Laser Institute

Recruiting

Miami,Florida,33173,United States

Swanee Cepero
Jill Waibel

Cahaba Derm and skin hlth ctr 27

Recruiting

Birmingham,Alabama,35244,United States

Wes Booth
Vlada Groysman

Revival Research Institute

Recruiting

Troy,Michigan,48084,United States

Madhuri Para
Ali Moiin

MedDerm Associates

Recruiting

San Diego,California,92103,United States

Kristian Cadag
Michelle Pelle

Mayo Clinic Jacksonville

Recruiting

Jacksonville,Florida,32224,United States

Ashley Wentworth
Jarell C Hughes

Bellaire Dermatology Associates

Recruiting

Bellaire,Texas,77401,United States

Craig F Teller
Luis Leal Ruiz

First OC Dermatology

Recruiting

Fountain Valley,California,92708,United States

Keiry Espinoza
Vivian Laquer

Oregon Medical Research Center

Recruiting

Portland,Oregon,97223,United States

Megan Lamey
Benjamin D Ehst

Encore Medical Research

Recruiting

Hollywood,Florida,33024,United States

Yeniska Hall
Jerome Obed

ACRC Trials

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Plano,Texas,75024,United States

Seemal Rohit Desai
Jani Taylor

International Clinical Research Tennessee LCC

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Murfreesboro,Tennessee,37130,United States

Miles Guy
Christina Feser

Virginia Clinical Research

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Norfolk,Virginia,23507,United States

David M Pariser
Crystal Temple

Global Clinical Professionals

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St. Petersburg,Florida,33714,United States

Wanda M Boote
Madelaine Perez

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Novartis Pharmaceuticals

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