AzTrials
AzTrials

Warm Autoimmune Hemolytic Anemia (wAIHA)Phase 3PATHWAYNCT05073458

Study of the Efficacy and Safety of Parsaclisib in Participants With Primary Warm Autoimmune Hemolytic Anemia

A Phase 3 study testing parsaclisinib in people with Warm Autoimmune Hemolytic Anemia (wAIHA), run by Incyte Corporation at 56 sites in 13 countries.

Terminated

Stopped early. The study ended before it was planned to and will not resume.

Official record
Search all trials

Trial summary

The purpose of this study is to evaluate the efficacy and safety of parsaclisib compared with placebo in participants with Primary Warm Autoimmune Hemolytic Anemia (wAIHA), Read more about this study

Who is it for?
Ages 18 to 99 years
Conditions the study is for
Warm Autoimmune Hemolytic Anemia (wAIHA)
What is being tested?
parsaclisinib
Type of treatment
Pill or oral medicine
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
13 participants
Where
56 sitesin 13 countries
Study dates
15 Mar 2022to 29 Apr 2024
Phase
Phase 3
Are there results?
Yes, posted in the registrySummary in the doctors' view

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 to 99 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Diagnosis of primary warm AIHA.
  • Participants who have at least 1 unsuccessful prior therapy for warm AIHA or unable to receive or tolerate other therapies.
  • Hemoglobin ≥ 6.5 to < 10 g/dL with symptoms of anemia at screening.
  • FACIT-F score ≤ 43 at screening.
  • Willingness to avoid pregnancy or fathering children.
  • Willingness to receive PJP prophylaxis.
  • Further inclusion criteria apply.

Who cannot join

  • Women who are pregnant, breastfeeding or who are planning a pregnancy.
  • Diagnosis of other types of AIHA (CAD, cold agglutinin syndrome, mixed-type AIHA or paroxysmal cold hemoglobinuria).
  • Secondary warm AIHA from any cause or diagnosis of Evans syndrome.
  • Splenectomy less than 3 months before randomization.
  • Participants with a history or ongoing significant illness as assessed by the investigator.
  • Participants with a current of medical history of a malignancy within the past 5 years except basal or squamous cell skin cancer that has been removed and considered cured, or superficial bladder cancer, prostate intraepithelial neoplasm, carcinoma in situ of the cervix, or other noninvasive or indolent malignancy.
Show all 10Show fewer
  • Participants know to be infected with HIV, Hepatitis B, or hepatitis C.
  • Chronic or current active infectious disease requiring systemic antibiotics, antifungal, or antiviral treatment or exposure to a live vaccine.
  • Participants with laboratory values outside of the protocol defined ranges.
  • Further exclusion criteria apply.

Trial locations and contacts

56 sites in 13 countries.

56 sites in 13 countries

United States10 sites
  • Investigative Site US009

    Canton, Ohio, 44718

  • Investigative Site US010

    Easton, Pennsylvania, 18045

  • Investigative Site US003

    Greenville, North Carolina, 27858

  • Investigative Site US012

    Indianapolis, Indiana, 46260

  • Investigative Site US001

    Knoxville, Tennessee, 37920

  • Investigative Site US005

    Los Angeles, California, 90089

  • Investigative Site US006

    Miami, Florida, 33165

  • Investigative Site US007

    The Bronx, New York, 10461

  • Investigative Site US002

    The Bronx, New York, 10467

  • Investigative Site US004

    Whittier, California, 90603

Other trials in United States

Japan10 sites
  • Investigative Site JP008

    Fukuoka, 807-8556

  • Investigative Site JP004

    Isehara, 259-1193

  • Investigative Site JP006

    Nagoya, 467-8602

  • Investigative Site JP009

    Okayama, 700-8557

  • Investigative Site JP002

    Okayama, 701-0192

  • Investigative Site JP010

    Osakasayama-shi, 589-8511

  • Investigative Site JP005

    Saitama, 350-0495

  • Investigative Site JP007

    Sendai, 980-8574

  • Investigative Site JP001

    Suita-shi, 565-0871

  • Investigative Site JP003

    Tokyo, 141-8625

Other trials in Japan

Italy6 sites
  • Investigative Site IT003

    Florence, 50134

  • Investigative Site IT002

    Milan, 20122

  • Investigative Site IT001

    Novara, 28100

  • Investigative Site IT004

    Pavia, 27100

  • Investigative Site IT006

    Rome, 00168

  • Investigative Site IT005

    Trieste, 34125

Other trials in Italy

Poland6 sites
  • Investigative Site PL001

    Legnica, 59220

  • Investigative Site PL006

    Lodz, 93-510

  • Investigative Site PL003

    Nowy Sącz, 33-300

  • Investigative Site PL005

    Opole, 45-372

  • Investigative Site PL004

    Wałbrzych, 58-309

  • Investigative Site PL002

    Wroclaw, 53-439

Other trials in Poland

Spain6 sites
  • Investigative Site ES006

    Badalona, 08916

  • Investigative Site ES001

    Barcelona, 08036

  • Investigative Site ES003

    Madrid, 28006

  • Investigative Site ES005

    Murcia, 30008

  • Investigative Site ES004

    Tarragona, 43005

  • Investigative Site ES002

    Valencia, 46026

Other trials in Spain

United Kingdom5 sites
  • Investigative Site GB002

    Glasgow, G4 0SF

  • Investigative Site GB006

    London, W12 0HS

  • Investigative Site GB003

    Norwich, NR4 7UY

  • Investigative Site GB004

    Plymouth, PL6 8DH

  • Investigative Site GB005

    Reading, RG1 5AN

Other trials in United Kingdom

France3 sites
  • Investigative Site FR002

    Lille, 59037

  • Investigative Site FR003

    Marseille, 13285

  • Investigative Site FR001

    Paris, 75015

Other trials in France

Austria2 sites
  • Investigative Site AT002

    Salzburg CET, A-5020

  • Investigative Site AT001

    Vienna, 01090

Other trials in Austria

Belgium2 sites
  • Investigative Site BE001

    La Louvière, 07100

  • Investigative Site BE002

    Liège, 04000

Other trials in Belgium

Germany2 sites
  • Investigative Site DE001

    Essen, 45147

  • Investigative Site DE002

    Ulm, 89081

Other trials in Germany

Israel2 sites
  • Investigative Site IL002

    Haifa, 31096

  • Investigative Site IL001

    Nahariya, 2210001

Other trials in Israel

Canada1 site
  • Investigative Site CA001

    Edmonton, Alberta, T6G 2P4

Other trials in Canada

Netherlands1 site
  • Investigative Site NL001

    Rotterdam, 3015CA

Other trials in Netherlands

About this study

Official title: A Phase 3, Randomized, Double-Blind, Placebo-Controlled Study of the Efficacy and Safety of Parsaclisib in Participants With Primary Warm Autoimmune Hemolytic Anemia

The purpose of this study is to evaluate the efficacy and safety of parsaclisib compared with placebo in participants with Primary Warm Autoimmune Hemolytic Anemia (wAIHA),

Read the detailed description

Prospective participants must have primary wAIHA as well as other protocol-defined criteria. After participants have been determined to be eligible for the study, they will be randomized to 2:1, with stratification factor of corticosteroid dose and hemoglobin (Hgb <9 g/dL or ≥ 9 g/dL). Once a participant has completed the week 24 assessments in the double-blind period, the participant will have the opportunity to receive parsaclisib in the open-label treatment which will last up to another 24 weeks. Participants may then continue to receive parsaclisib in a long-term extension period.

Being tested
parsaclisinib, placebo
Keywords
Warm Autoimmune Hemolytic Anemia (wAIHA)

What participants receive

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

  • parsaclisinibDrug

    Also called INCB050465

    parsaclisib will be administered QD orally

  • placeboDrug

    placebo will be administered QD orally follwed by Parsaclisinib in the open label period

Study groups in NCT05073458
Study groupRoleWhat they receive
Group A: ParsaclisibExperimentalParticipants will receive parsaclisib for 24 weeks (double-blind period). Participant who completed the double-blind period and tolerating the study treatment upon investigator's opinion will continue into open-label period for an additional 24 weeks. Participants may then continue to receive parsaclisib in a long-term extension period.
Receives: Drug: parsaclisinib
Group B: Placebo followed by ParsaclisibPlacebo comparatorParticipants will receive placebo for 24 weeks (double-blind period). Participants who completed the double-blind period will receive parsaclisib in the 24 week open-label period. Participants may then continue to receive parsaclisib in a long-term extension period.
Receives: Drug: placebo

What is being measured

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

  1. Percentage of Participants Attaining a Durable Hemoglobin Response

    A durable hemoglobin response was defined as hemoglobin ≥10 grams per deciliter (g/dL) with an increase from Baseline of ≥2 g/dL not attributed to rescue therapy at ≥3 of the 4 available visits at Week 12 and/or later during the 24-week double-blind treatment period.

    Measured: up to Week 24

Secondary outcomes (12)
  1. Percentage of Participants With a ≥3-point Increase From Baseline in Functional Assessment of Chronic Illness Therapy - Fatigue (FACIT-F) Score at Week 24

    The FACIT-F scale was developed to assess anemia-related fatigue. The FACIT-F is a 13-item measure that assesses self-reported fatigue and its impact upon daily activities and function over the past 7 days. A clinically meaningful change in the FACIT-F score was defined as ≥3-point increase from Baseline. Item scores range from 0 ("not at all") to 4 ("very much"), and the total score ranges from 0 to 52; lower scores indicate greater fatigue. Change from Baseline was calculated as the post-Baseline value minus the Baseline value.

    Measured: Baseline; Week 24

  2. Percentage of Participants With a 50 Meter Increase From Baseline to Week 24 in a 6-minute Walk Test (6MWT)

    The 6MWT is used to evaluate submaximal exercise capacity. It is a self-paced measurement of the distance that a participant can quickly walk on a flat, hard surface in a period of 6 minutes.

    Measured: Baseline; Week 24

  3. Change From Baseline in the FACIT-F Score at Each Post-Baseline Visit

    The FACIT-F scale was developed to assess anemia-related fatigue. The FACIT-F is a 13-item measure that assesses self-reported fatigue and its impact upon daily activities and function over the past 7 days. A clinically meaningful change in the FACIT-F score was defined as ≥3-point increase from Baseline. Item scores range from 0 ("not at all") to 4 ("very much"), and the total score ranges from 0 to 52; lower scores indicate greater fatigue. Change from Baseline was calculated as the post-Baseline value minus the Baseline value. End of Treatment, Double-blind Period: assessment performed for participants who discontinued treatment before Week 24. End of Treatment, Open-label Period: assessment performed for participants who discontinued treatment after Week 24 and before Week 56. Follow-up Visit 3 occurred 12 weeks after the end of treatment visit.

    Measured: Baseline; Day 1; Weeks 8, 12, 16, 20, 24, 28, 32, 40, 48, 56, and every 16 weeks post-Week 56

  4. Percentage Change From Baseline in the FACIT-F Score at Each Post-Baseline Visit

    The FACIT-F scale was developed to assess anemia-related fatigue. The FACIT-F is a 13-item measure that assesses self-reported fatigue and its impact upon daily activities and function over the past 7 days. A clinically meaningful change in the FACIT-F score was defined as ≥3-point increase from Baseline. Item scores range from 0 ("not at all") to 4 ("very much"), and the total score ranges from 0 to 52; lower scores indicate greater fatigue. Percentage change from Baseline was calculated as ([the post-Baseline value minus the Baseline value]/Baseline value) x 100. End of Treatment, Double-blind Period: assessment performed for participants who discontinued treatment before Week 24. End of Treatment, Open-label Period: assessment performed for participants who discontinued treatment after Week 24 and before Week 56. Follow-up Visit 3 occurred 12 weeks after the end of treatment visit.

    Measured: Baseline; Day 1; Weeks 8, 12, 16, 20, 24, 28, 32, 40, 48, 56, and every 16 weeks post-Week 56

  5. Change From Baseline in Hemoglobin at Each Post-Baseline Visit

    Change from Baseline was calculated as the post-Baseline value minus the Baseline value. End of Treatment, Double-blind Period: assessment performed for participants who discontinued treatment before Week 24. End of Treatment, Open-label Period: assessment performed for participants who discontinued treatment after Week 24 and before Week 56. Follow-up Visits 1, 2, and 3 occurred 4, 8, and 12 weeks, respectively, after the end of treatment visit.

    Measured: Baseline; Day 1; Weeks 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, 48, 52, 56, and every 8 weeks post-Week 56

  6. Percentage Change From Baseline in Hemoglobin at Each Post-Baseline Visit

    Percentage change from Baseline was calculated as ([the post-Baseline value minus the Baseline value]/Baseline value) x 100. End of Treatment, Double-blind Period: assessment performed for participants who discontinued treatment before Week 24. End of Treatment, Open-label Period: assessment performed for participants who discontinued treatment after Week 24 and before Week 56. Follow-up Visits 1, 2, and 3 occurred 4, 8, and 12 weeks, respectively, after the end of treatment visit.

    Measured: Baseline; Day 1; Weeks 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, 48, 52, 56, and every 8 weeks post-Week 56

  7. Percentage of Participants Who Received Transfusions From Week 6 to Week 24 and From Week 24 to Week 48

    Transfusion was permitted as a rescue treatment. Rescue medication was to be considered if the absolute hemoglobin level continued to decline, there was a > 1 g/dL decrease in hemoglobin from the prior assessment, or the participant developed new or worsening symptoms of warm autoimmune hemolytic anemia (wAIHA).

    Measured: Week 6 to Week 24; Week 24 to Week 48

  8. Change From Baseline in Daily Corticosteroid Dose at Week 24

    A new or increased dose of corticosteroids (prednisone or equivalent) from the Day 1 dose was permitted as rescue treatment. Rescue medication was to be considered if the absolute hemoglobin level continued to decline, there was a > 1 g/dL decrease in hemoglobin from the prior assessment, or the participant developed new or worsening symptoms of wAIHA. Change from Baseline was calculated as the post-Baseline value minus the Baseline value.

    Measured: Baseline; Week 24

  9. Percentage Change From Baseline in Daily Corticosteroid Dose at Week 24

    A new or increased dose of corticosteroids (prednisone or equivalent) from the Day 1 dose was permitted as rescue treatment. Rescue medication was to be considered if the absolute hemoglobin level continued to decline, there was a > 1 g/dL decrease in hemoglobin from the prior assessment, or the participant developed new or worsening symptoms of wAIHA. Percentage change from Baseline was calculated as ([the post-Baseline value minus the Baseline value]/Baseline value) x 100.

    Measured: Baseline; Week 24

  10. Percentage of Participants Who Required Rescue Therapy at Any Visit From Week 6 Through Week 24, and From Week 24 to Week 48

    Rescue medication was to be considered if the absolute hemoglobin level continued to decline, there was a > 1 g/dL decrease in hemoglobin from the prior assessment, or the participant developed new or worsening symptoms of wAIHA.

    Measured: Week 6 to Week 24; Week 24 to Week 48

  11. Number of Participants With Any Treatment-emergent Adverse Event (TEAE)

    An adverse event (AE) was defined as any untoward medical occurrence associated with the use of a drug in humans, whether or not it was considered drug-related. An AE could therefore be any unfavorable or unintended sign (including an abnormal laboratory finding), symptom, or disease (new or exacerbated) temporally associated with the use of study drug. TEAEs were defined as AEs reported for the first time or the worsening of pre-existing events after the first dose of study drug.

    Measured: up to 446 days

  12. Number of Participants With Any ≥Grade 3 TEAE

    An AE was defined as any untoward medical occurrence associated with the use of a drug in humans, whether or not it was considered drug-related. TEAEs were defined as AEs reported for the first time or the worsening of pre-existing events after the first dose of study drug. The severity of AEs were assessed using Common Terminology Criteria for Adverse Events (CTCAE) version 5.0 Grades 1 through 5. Grade 1: mild; asymptomatic or mild symptoms; clinical or diagnostic observations only; treatment not indicated. Grade 2: moderate; minimal, local, or noninvasive treatment indicated; limiting age-appropriate activities of daily living. Grade 3: severe or medically significant but not immediately life-threatening; hospitalization or prolongation of hospitalization indicated; disabling; limiting self-care activities of daily living. Grade 4: life-threatening consequences; urgent treatment indicated. Grade 5: fatal.

    Measured: up to 446 days

Timeline

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

  1. First posted11 Oct 2021
  2. Study start15 Mar 2022
  3. Primary completion17 Oct 2023
  4. Study completion29 Apr 2024

Why it stopped: A business decision was made to discontinue further enrollment. There were no safety concerns that contributed to this decision.

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 3
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
Triple blind
Who is masked
Participant, Care provider, Investigator
Enrolment
13 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT05073458
Sponsor's protocol ID
INCB 50465-309
Other IDs
2021-002844-66
Acronym
PATHWAY
Status last verified
Oct 2025
First submitted
28 Sep 2021
Last updated
3 Nov 2025
Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
Individual data sharing
Yes: Incyte shares data with qualified external researchers after a research proposal is submitted. These requests are reviewed and approved by a review panel on the basis of scientific merit. All data provided is anonymized to respect the privacy of patients who have participated in the trial in line with applicable laws and regulations. The trial data availability is according to the criteria and process described on https://www.incyte.com/our-company/compliance-and-transparency

Questions about this trial

What is this clinical trial studying?

A Phase 3 study testing parsaclisinib in people with Warm Autoimmune Hemolytic Anemia (wAIHA), run by Incyte Corporation at 56 sites in 13 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 7 inclusion and 10 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: stopped early, as of the sponsor's last update on 3 Nov 2025. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 56 sites in United States, Japan, Italy, Poland, Spain and 8 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. Some participants in this study may receive a placebo. 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 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.

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

Are results available for this study?

Yes. Results are posted in the registry (first posted 15 Jan 2025). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

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?

Percentage of Participants Attaining a Durable Hemoglobin Response (time frame: up to Week 24). 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 3 Nov 2025.

Free account

Log in to keep searching

You’ve used your 3 free searches. AzTrials is free: log in or create a free account to keep searching clinical trials and save the ones you want to follow.

Create a free accountLog in