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Severe AsthmaPhase 2NCT06966479

A Long-Term Safety and Efficacy Study of Verekitug (UPB-101) in Adult Participants With Severe Asthma (VALOUR)

A Phase 2 study testing Verekitug in people with Severe Asthma, run by Upstream Bio Inc. at 102 sites in 15 countries.

Active, not recruiting

Under way, not looking for participants. Everyone needed has enrolled. The study is still running.

Official record
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Trial summary

The primary purpose of this study is to evaluate the long-term safety and efficacy of verekitug (UPB-101) in participants who complete the VALIANT study (NCT06196879). Read more about this study

Who is it for?
Ages 18 years and older
Conditions the study is for
Severe Asthma
What is being tested?
Verekitug
Type of treatment
Injection or infusion
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
396 participants
Where
102 sitesin 15 countries
Study dates
21 May 2025to Sep 2027
Phase
Phase 2
Are there results?
Not yet: the study is under way

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Completion of the VALIANT study (UPB-CP-04 [NCT06196879]) per protocol.
  • Participant has signed, dated, and received a copy of the Institutional Review Board (IRB)/Independent Ethics Committee (IEC)-approved written informed consent form (ICF) for the LTE study.
  • Contraceptive use by participants must be consistent with local regulations regarding the methods of contraception for those participating in clinical studies.

Who cannot join

  • Abnormal medical history, physical finding, or safety finding that in the opinion of the Investigator may obscure the study data or interfere with the participant's safety.
  • Any clinical laboratory test result outside of the reference ranges considered by the Investigator as clinically significant and that may obscure the study data or interfere with the participant's safety.
  • Participant with a history or evidence of a clinically significant pulmonary condition (other than asthma), including significant restrictive findings on pulmonary function testing, chronic bronchitis, emphysema, bronchiectasis, pulmonary fibrosis, or any other related condition that may obscure the study data (e.g., gastroesophageal reflux and vocal cord paralysis/dysfunction).
  • Pregnant or breastfeeding or planning to become pregnant or breastfeed during the study or unwilling to use adequate birth control, if of reproductive potential and sexually active.
  • Participants with significant protocol deviations in VALIANT, assessed at the discretion of the Sponsor.
  • Participant is unreliable, incapable of adhering to the protocol and visit schedule according to the judgment of the Investigator or has any disorder that may compromise their ability to give informed consent.

Trial locations and contacts

102 sites in 15 countries.

102 sites in 15 countries

United States28 sites
  • Kern Research, Inc.

    Bakersfield, California, 93301

  • Treasure Valley Medical Research

    Boise, Idaho, 83706

  • Advance Pharma Research

    Cutler Bay, Florida, 33189

  • Horizon Clinical Research

    Cypress, Texas, 77429

  • Alina Clinical Trials, LLC

    Dallas, Texas, 75209

  • OK Clinical Research, LLC

    Edmond, Oklahoma, 73034

  • El Paso Pulmonary Association

    El Paso, Texas, 79902

  • Pulmonary Research Institute of Southeast Michigan (PRISM)

    Farmington Hills, Michigan, 48336

  • AA MRC

    Flint, Michigan, 48504

  • California Medical Research Associates Inc.

    Houston, Texas, 77008

  • M3 Wake Research

    Las Vegas, Nevada, 89106

  • Metroplex Pulmonary and Sleep Center Drive

    McKinney, Texas, 75069

  • Clinical Site Partners, LLC dba Flourish Research

    Miami, Florida, 33135

  • Phoenix Medical Research

    Miami, Florida, 33165

  • Research Institute of South Florida

    Miami, Florida, 33173

  • Health and Life Research Institute, LLC

    Miami, Florida, 33176

  • Nouvelle Clinical Research

    Miami, Florida, 33189

  • California Medical Research Associates Inc.

    Northridge, California, 91324

  • Edward Jenner Research Group, LLC

    Plantation, Florida, 33317

  • R&B Medical Center

    Tampa, Florida, 33614

  • Urban Health Plan INC

    The Bronx, New York, 10459

  • Toledo Institute of Clinical Research Inc

    Toledo, Ohio, 43617

  • DM Clinical Tomball

    Tomball, Texas, 77375

  • Integrated Research of Inland Inc

    Upland, California, 91786

  • Allergy & Asthma Clinical Research

    Walnut Creek, California, 94598

  • Allianz Research Institute

    Westminster, California, 92683

  • Chesapeake Clinical Research Inc

    White Marsh, Maryland, 21162

  • Clinical Site Partners dba Flourish research

    Winter Park, Florida, 32789

Other trials in United States

Argentina11 sites
  • CARE: Centro de Alergia y Enfermedades Respiratorias

    Buenos Aires, C1414AIF

  • Investigaciones en Alergias y Enfermedades Respiratorias-InAER

    Buenos Aires

  • Fundacion Cidea

    CABA, Argentina, C1121ABE

  • Centro de Medicina Respiratoria

    Concepción del Uruguay, Entre Ríos Province, E3260

  • Instituto de Medicina Respiratoria, IMeR/ Instituto Médico DAMIC

    Córdoba, Córdoba Province, X5003DCE

  • Fundacion Scherbovsky

    Mendoza, Mendoza Province, 5500

  • INSARES

    Mendoza, 5500

  • Centro Medico Dharma

    Mendoza, M5500

  • Investigaciones En Patologias Respiratorias

    San Miguel de Tucumán, Tucumán Province, CP T4000IAP

  • Office of Hector H. Altieri MD

    San Miguel de Tucumán, 4000

  • Instituto Especialidades de la Salud Rosario

    Santa Fe, 2000

Other trials in Argentina

Poland11 sites
  • Centrum Medycyny Oddechowej, Mroz Spolka Jawna

    Bialystok, Podlaskie Voivodeship, 15-044

  • Uniwersyteckie Centrum Kliniczne, Klinika Alergologii i Pneumonologii

    Gdansk, Pomorskie Voivodeship, 80-214

  • Centrum Medyczne "All-Med" Badania Kliniczne

    Krakow, Malopolskie Voivodeship, 30-033

  • ATOPIA Niepubliczny Zakład Opieki Zdrowotnej Poradnie Specjalistyczne

    Krakow, Malopolskie Voivodeship, 31-141

  • Małopolskie Centrum Alergologii Spółka z ograniczoną odpowiedzialnością

    Krakow, Malopolskie Voivodeship, 31-624

  • Ostrowieckie Centrum Medyczne spolka cywilna Anna Olech-Cudzik, Krzysztof Cudzik

    Ostrowiec Świętokrzyski, Świętokrzyskie Voivodeship, 27-400

  • Prywatny Gabinet Lekarski Malgorzata Pawlukiewicz

    Rzeszów, Podkarpackie Voivodeship, 35-051

  • "Alergo-Med" Specjalistyczna Przychodnia Lekarska Spolka Z Ograniczona Odpowiedzialnoscia

    Tarnów, Malopolskie Voivodeship, 33-100

  • Centrum Badan Klinicznych Piotr Napora lekarze Spp

    Wroclaw, Dolnoslaskie Voivodeship, 51-162

  • ALL-MED Specjalistyczna Opieka Medyczna. Medyczny Instytut Badawczy Marek Jutel

    Wroclaw, Dolnoslaskie Voivodeship, 53-201

  • NZOZ J. Małolepszy i Partnerzy

    Wroclaw, Dolnoslaskie Voivodeship, 54-239

Other trials in Poland

South Korea9 sites
  • Yeungnam University Hospital

    Daegu, Republic of Korea, 42415

  • Chungbuk National University Hospital

    Jungbuk, Republic of Korea, 28644

  • Kyung Hee University Hospital

    Seoul, Republic of Korea, 02447

  • Seoul National University Hospital

    Seoul, Republic of Korea, 03080

  • Yonsei University Health System - Severance Hospital

    Seoul, Republic of Korea, 03722

  • Asan Medical Center

    Seoul, Republic of Korea, 05505

  • Samsung Medical Center

    Seoul, Republic of Korea, 06351

  • The Catholic University of Korea, Seoul St. Marys Hospital

    Seoul, Republic of Korea, 06591

  • Eunpyeong St. Marys Hospital

    Seoul, South Korea, 03312

Other trials in South Korea

Bulgaria8 sites
  • MC Zdrave 1

    Kozloduy, Vratsa, 3320

  • MHAT "Rahila Angelova" Pernik

    Pernik, Pernik, 2300

  • Ambulatory For Specialized Outpatient Medical Care - Individual Practice - Dr. Nikolay Evgeniev Ruse Ltd

    Rousse, Ruse, 7000

  • Medical Center Excelsior (Todor Popov)

    Sofia, Sofia, 1407

  • MC Convex/DCC Convex

    Sofia, Sofia, 1680

  • Medical Center HERA EOOD

    Sofia, 1510

  • Medical center Pulmovizhyn

    Sofia, 1756

  • Medical Center New Rehabilitation Center EOOD

    Stara Zagora, Stara Zagora, 6001

Other trials in Bulgaria

Japan7 sites
  • Oji General Hospital

    Hokkaido, Hokkaido, 053-8506

  • National Hospital Organization Ibarakihigashi National Hospital

    Ibaraki, Osaka, 319-1113

  • Osaka Habikino Medical Center

    Osaka, Japan, 583-8588

  • Kishiwada City Hospital

    Osaka, Japan, 596-8501

  • Osaka Metropolitan University Hospital

    Osaka, Osaka, 545-0051

  • Tokyo-Eki Center-building Clinic

    Tokyo, Chuo-ku, 103-0027

  • Fukuwa Clinic

    Tokyo, Tokyo, 104-0031

Other trials in Japan

Germany6 sites
  • KPPK Studienzentrum

    Bendorf, 56170

  • RCMS/Lungenpraxis Hohenzollerndamm

    Berlin, Germany, 10717

  • ME Clinical Respiratory Research Hamburg GmbH

    Hamburg, Free and Hanseatic City of Hamburg, 22299

  • IKF Pneumologie Frankfurt, Clinical Research Center Respiratory Diseases

    Hessen, Germany, 60596

  • POIS Sachsen GmbH

    Leipzig, Germany, 04347

  • IKF Pneumologie GmbH & Co. KG

    Mainz, 55128

Other trials in Germany

United Kingdom6 sites
  • Bradford Royal Infirmary

    Bradford, West Yorkshire, BD9 6RJ

  • Ashford & St Peters Hospital

    Chertsey, Surrey, KT16 0PZ

  • Castle Hill Hospital, Hull University Teaching Hospitals NHS Trust

    Cottingham, East Yorkshire, HU16 5JQ

  • Gartnavel General Hospital (Glasgow Clinical Research Facility)

    Glasgow, Scotland, G12 0YN

  • Churchill Hospital - Centre for Clinical Vaccinology and Tropical Medicine (CCVTM)

    Oxford, OX3 7LE

  • Gannochy Research Suite, Perth Royal Infirmary

    Perth, Tayside, PH1 1NX

Other trials in United Kingdom

South Africa5 sites
  • Allergy & Immunology Unit, UCT Lung Institute

    Cape Town, Western Cape, 7700

  • St Augustine's Hospital/Dr. IA Abdullah

    Durban, KwaZulu-Natal, 4001

  • Synapta Clinical Research Centre

    Durban, KwaZulu-Natal, 4001

  • Newtown CRC

    Newtown, Johannesburg, 2001

  • Emmed Research

    Pretoria, Gauteng, 0002

Other trials in South Africa

Chile4 sites
  • CIMER

    Ñuñoa, Santiago Metropolitan, 7770484

  • Sociedad medica Sy G Limitada

    Providencia, Santiago Metropolitana, CHL 7501126

  • Fundacion Medica San Cristobal

    Santiago, Santiago Metropolitan, 7630226

  • Estudios Clínicos de Enfermedades Respiratorias e Inmunológicas (CIERI)

    Valparaíso, Valparaiso, 2531172

Other trials in Chile

Spain2 sites
  • Pectus Respiratory Health

    Barcelona, Catalonia, 08017

  • Hospital Gregorio Marañon

    Madrid, Madrid, 28007

Other trials in Spain

Ukraine2 sites
  • Regional Communal Nonprofit Institution "Chernivtsi Regional Clinical Hospital"

    Chernivtsi, Chernivtsi Oblast, 58000

  • Municipal Non-Profit Enterprise "Center for Infectious Diseases of the Ivano-Frankivsk Regional Council"

    Ivano-Frankivsk, Ivano-Frankivsk Oblast, 76018

Other trials in Ukraine

Canada1 site
  • Dynamic Drug Advancement

    Ajax, Ontario, L1S 2J5

Other trials in Canada

Czechia1 site
  • Plicni Stredisko Teplice S.R.O

    Teplice, 415 01

Other trials in Czechia

Italy1 site
  • UOC Pneumologia AOU Renato Dulbecco

    Catanzaro, Catanzaro, 88100

Other trials in Italy

About this study

Official title: A Long-Term Extension Study to Evaluate Safety and Efficacy of Verekitug (UPB-101) in Adult Participants With Severe Asthma Who Completed the VALIANT Trial

The primary purpose of this study is to evaluate the long-term safety and efficacy of verekitug (UPB-101) in participants who complete the VALIANT study (NCT06196879).

Conditions
Severe Asthma
Being tested
Verekitug, Placebo
Keywords
UPB-101, Verekitug, TSLP receptor, monoclonal antibody, VALIANT, VALOUR, Respiratory Tract Diseases, Bronchial Diseases, Asthma, Lung Diseases, Uncontrolled Asthma
Medical subject headings
Asthma, Respiratory Tract Diseases, Bronchial Diseases, Lung Diseases

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • VerekitugDrug

    Also called UPB-101

    Verekitug subcutaneous injection.

  • PlaceboDrug

    Verekitug matching placebo.

Study groups in NCT06966479
Study groupRoleWhat they receive
Verekitug 100 mg Q12W and PlaceboExperimentalParticipants will receive 0.5 mL of verekitug (100 mg) and 2.0 mL of matching placebo, subcutaneous (SC) injections, every 12 weeks (Q12W) for up to 48 weeks.
Receives: Drug: Verekitug; Drug: Placebo
Verekitug 400 mg Q24W and PlaceboExperimentalParticipants will receive 2.0 mL of verekitug (400 mg) and 0.5 mL of matching placebo, SC injections, at Weeks 24 and 48 visits. Participants will also receive 2.0 mL and 0.5 mL of placebo subcutaneously in two separate injections at Weeks 12 and 36 visits.
Receives: Drug: Verekitug; Drug: Placebo

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Number of Participants with Adverse Events (AEs) and Serious Adverse Events (SAEs)

    An AE is any untoward medical occurrence in a participant who received study drug without regard to possibility of causal relationship. SAE is an AE resulting in any of the following outcomes or deemed significant for any other reason: death; initial or prolonged inpatient hospitalization; life-threatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly.

    Measured: From VALOUR baseline up to Week 64

Secondary outcomes (4)
  1. Annualized Asthma Exacerbation Rate (AAER)

    An asthma exacerbation is defined as a worsening of asthma that required treatment with systemic (oral or intravenous) corticosteroids for at least three consecutive days or a single depo-injectable dose of corticosteroids or an emergency room (ER) or urgent care visit that required systemic corticosteroids or an admission to an inpatient facility and/or evaluation and treatment in a healthcare facility for greater than or equal to 24 hours.

    Measured: From VALOUR baseline up to Week 60

  2. Change from LTE Baseline in Forced Expiratory Volume in 1 Second (FEV1)

    Spirometry will be performed pre-bronchodilator (BD) to measure lung function. FEV1 is the maximal volume of air exhaled in the first second of a forced expiration from a position of full inspiration.

    Measured: From VALOUR baseline to Week 60

  3. Change from LTE Baseline in Fractional Exhaled Nitric Oxide (FeNO)

    Standardized single breath FeNO test is performed to evaluate airway inflammation.

    Measured: From VALOUR baseline up to Week 60

  4. Change from LTE Baseline in Asthma Control Questionnaire-6 (ACQ-6)

    ACQ-6 is a participant-reported questionnaire to assess asthma control with 6 items assessing night-time waking, symptoms on waking, activity limitation, shortness of breath, wheeze, and rescue short-acting beta agonist use. Questions are weighted equally and scored from 0 (totally controlled) to 6 (severely uncontrolled). The ACQ-6 score is the mean of the responses.

    Measured: From VALOUR baseline to Week 60

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted11 May 2025
  2. Study start21 May 2025
  3. Primary completionSep 2027 (estimated)
  4. Study completionSep 2027 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 2
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
Quadruple blind
Who is masked
Participant, Care provider, Investigator, Outcomes assessor
Enrolment
396 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT06966479
Sponsor's protocol ID
UPB-CP-05
Other IDs
2024-519469-23-00
Status last verified
May 2026
First submitted
9 May 2025
Last updated
14 May 2026
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
Individual data sharing
No

Questions about this trial

What is this clinical trial studying?

A Phase 2 study testing Verekitug in people with Severe Asthma, run by Upstream Bio Inc. at 102 sites in 15 countries.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 3 inclusion and 6 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: under way, not looking for participants, as of the sponsor's last update on 14 May 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 102 sites in United States, Argentina, Poland, South Korea, Bulgaria and 10 more countries. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

This study is still under way. Results are not available in the source record yet.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Number of Participants with Adverse Events (AEs) and Serious Adverse Events (SAEs) (time frame: From VALOUR baseline up to Week 64). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 14 May 2026.

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