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Hereditary AngioedemaPhase 2/3RAPIDe-2NCT05396105

Extension Study of Oral PHA-022121 for Acute Treatment of Angioedema Attacks in Patients With Hereditary Angioedema

A Phase 2/3 study testing deucrictibant in people with Hereditary Angioedema and Hereditary Angioedema Type I, run by Pharvaris Netherlands B.V. at 60 sites in 24 countries.

Enrolling by invitation

Enrolling by invitation. The study team selects and invites participants, usually from an existing group of patients.

Sites and contacts
Official record
Search all trials

Trial summary

This study evaluates the safety and efficacy of long-term on-demand treatment with orally administered deucrictibant for acute hereditary angioedema (HAE) attacks, including laryngeal attacks. Read more about this study

Who is it for?
Ages 12 years and older
What is being tested?
deucrictibant
Type of treatment
Pill or oral medicine
Could I receive a placebo?
No, everyone receives an active treatment
How many people
150 participants
Where
60 sitesin 24 countries
Study dates
28 Dec 2022to Jun 2027
Phase
Phase 2/3
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 12 years and older
  • All sexes
  • No healthy volunteers
  • Child, Adult, Older adult

Who may be able to join

  • Provision of the signed informed consent form by the participant and/ or legally designated representative. If the participant is a minor (i.e., <18 years of age or as determined by local law), consent will be obtained from the participant's parent/legally designated representative/guardian and signed assent will be obtained from the participant, per country regulations.
  • For participants from Study C201, received at least one dose of study drug (including the non-attack visit) in Study C201. For participants from Study C306, participant was randomized (and for adolescent participants ≥12 to <18 years received a dose of study drug in a non-attack state at Visit 1) and completed Study C306, with 2 attacks treated, or after closure of that study by the Sponsor. Enrollment of adolescents (≥12 to <18 years or age of adulthood as defined locally) from these studies is with consideration of local age requirements.
  • Female participants of childbearing potential (or who become of childbearing potential during the study) must agree to the protocol-specified pregnancy testing and to be abstinent from heterosexual intercourse or to use an acceptable contraception method as defined in the protocol and as available locally from enrollment until 30 days after the last study drug administration.
  • In the opinion of the Investigator, the participant (and parent/caregiver for adolescent participants) is willing and able to comply with the protocol.
  • Adult participants with HAE type III (HAE-nC1INH) who are deucrictibant-treatment naïve, must meet all of the following:
  • Recurrent angioedema attacks with diagnostic testing results obtained during screening to confirm C1INH function ≥50% of normal and C4 level not below the lower level of the normal range performed by the central laboratory.
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  • Must either have:
  • Documented genetic mutation associated with HAE-nC1INH as listed in the Hereditary Angioedema Association (HAEA) and World Allergy Organization (WAO)/European Academy of Allergy and Clinical Immunology (EAACI) Guidelines.
  • OR
  • If no documented mutation: clinical diagnosis with family history of HAE-nC1INH and documented elevations of bradykinin levels in blood. (US, UK and Canada only).
  • Attacks not responding to treatments with high-dose antihistamine (cetirizine 40 mg/day or equivalent high-dose second-generation antihistamine medication) and no clinical attack symptoms relief if treated with corticosteroid, montelukast, or omalizumab.
  • Documented effective attack symptom relief with on-demand icatibant treatment.
  • A history of at least 1 HAE attack in the last 3 months prior to Screening

Who cannot join

  • Any female who is pregnant, plans to become pregnant, or is breast-feeding.
  • Any other systemic disease (e.g., cardiovascular, gastrointestinal, renal, respiratory, neurological) or significant disease or disorder that, in the opinion of the Investigator, would interfere with the participant's safety or ability to participate in the study.
  • Use of lanadelumab for long-term HAE prophylactic therapy within 12 weeks prior to enrollment in Part A.
  • Participants who have recently used short or long-term HAE prophylaxis or on-demand HAE treatment will not be excluded from the study provided the following washout period is observed (i.e., study screening or enrollment/rollover should be delayed allowing for washout):
  • For Part A:
  • 2-week washout period before enrollment should be respected for participants who have used any C1-INH product, oral kallikrein inhibitors, attenuated androgens, or anti-fibrinolytics for long-term prophylactic HAE therapy.
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  • 1-week washout period before enrollment should be respected for participants who have used plasma derived C1-INH concentrates (Berinert, Cinryze, Haegarda) for on-demand treatment or short-term prophylaxis.
  • 24-hour washout period before enrollment should be respected for participants who have used recombinant C1-INH (Ruconest) for on-demand treatment or short-term prophylaxis.
  • For Part B:
  • If a participant is receiving long-term prophylactic therapy with a medication indicated for HAE:, eg, plasma-derived C1INH, danazol at less than or equal to 200 mg/day, antifibrinolytics, berotralstat, or lanadelumab, they must be on a stable dose and regimen for at least 3 months before screening and intends to remain on the same dose for the duration of the study.
  • History of alcohol or drug abuse within the previous year, or current evidence of substance dependence or abuse
  • Participation in any other investigational drug study within (except with deucrictibant) currently, within the last 30 days prior to the first deucrictibant dose or within 5 half-lives of study drug at enrollment, whichever is longer.
  • Discontinued from parent study after enrollment for any study drug-related safety reason or non-compliance including significant protocol deviation.
  • Use of concomitant medications that are strong CYP3A4 inhibitors (e.g., clarithromycin, erythromycin, itraconazole, ketoconazole, ritonavir) or strong CYP3A4 inducers (e.g., carbamazepine and phenytoin).

Trial locations and contacts

60 sites in 24 countries. Contact the study team or a site near you to ask about taking part.

60 sites in 24 countries

United States12 sites
  • Study site

    Birmingham, Alabama, 35209

  • Study site

    Boston, Massachusetts, 02115

  • Study site

    Chevy Chase, Maryland, 20815

  • Study site

    Colorado Springs, Colorado, 80907

  • Study site

    Dallas, Texas, 75231

  • Study site

    Detroit, Michigan, 48202

  • Study site

    Hershey, Pennsylvania, 17033

  • Study site

    Little Rock, Arkansas, 72205

  • Study site

    San Diego, California, 92122

  • Study site

    Santa Monica, California, 90404

  • Study site

    St Louis, Missouri, 63141

  • Study site

    Walnut Creek, California, 94598

Other trials in United States

Italy7 sites
  • Study site

    Catania, 95124

  • Study site

    Milan, 20097

  • Study site

    Milan, 20138

  • Study site

    Naples, 80131

  • Study site

    Padova, 35128

  • Study site

    Palermo, 90146

  • Study site

    Roma, 00133

Other trials in Italy

Japan5 sites
  • Study site

    Hiroshima, 730-8518

  • Study site

    Kanagawa, 216-8511

  • Study site

    Osaka, 569-8686

  • Study site

    Tokyo, 113-8431

  • Study site

    Tokyo, 133-8431

Other trials in Japan

Brazil4 sites
  • Study site

    Ribeirão Preto, 14048-900

  • Study site

    Salvador, Estado de Bahia, 41950-640

  • Study site

    Santo André, 09060-870

  • Study site

    São Paulo, 05403-000

Other trials in Brazil

Germany4 sites
  • Study site

    Berlin, 12203

  • Study site

    Frankfurt am Main, 60590

  • Study site

    Frankfurt am Main, 60596

  • Study site

    Lübeck, 23538

Other trials in Germany

Argentina2 sites
  • Study site

    Buenos Aires, B1629AHJ

  • Study site

    Salta, 4400

Other trials in Argentina

Austria2 sites
  • Study site

    Graz, 8036

  • Study site

    Vienna, 1090

Other trials in Austria

Bulgaria2 sites
  • Study site

    Sofia, 1431

  • Study site

    Sofia, 1680

Other trials in Bulgaria

Canada2 sites
  • Study site

    Edmonton, Alberta, T6G 1Z1

  • Study site

    Montreal, Quebec

Other trials in Canada

France2 sites
  • Study site

    Grenoble, 38043

  • Study site

    Paris, 75571

Other trials in France

Puerto Rico2 sites
  • Study site

    San Juan, 918

  • Study site

    San Juan, 927

Other trials in Puerto Rico

South Korea2 sites
  • Study site

    Daegu, 41944

  • Study site

    Seoul, 03080

Other trials in South Korea

Spain2 sites
  • Study site

    Barcelona, 08907

  • Study site

    Madrid, 28007

Other trials in Spain

Turkey (Türkiye)2 sites
  • Study site

    Ankara, 06230

  • Study site

    Istanbul, 34093

Other trials in Turkey (Türkiye)

Australia1 site
  • Study site

    Campbelltown, New South Wales, 2560

Other trials in Australia

Czechia1 site
  • Study site

    Brno, 602 00

Other trials in Czechia

Hong Kong1 site
  • Study site

    Hong Kong

Other trials in Hong Kong

Hungary1 site
  • Study site

    Budapest, 1088

Other trials in Hungary

Israel1 site
  • Study site

    Ashkelon, 78278

Other trials in Israel

Netherlands1 site
  • Study site

    Amsterdam, 1005 AZ

Other trials in Netherlands

Poland1 site
  • Study site

    Krakow, 31-503

Other trials in Poland

South Africa1 site
  • Study site

    Cape Town, 7700

Other trials in South Africa

Sweden1 site
  • Study site

    Lund, 22185

Other trials in Sweden

United Kingdom1 site
  • Study site

    London, E1 2ES

Other trials in United Kingdom

About this study

Official title: A Phase II/III, Extension Study of Orally Administered PHA-022121 for Acute Treatment of Angioedema Attacks in Patients With Hereditary Angioedema

This study evaluates the safety and efficacy of long-term on-demand treatment with orally administered deucrictibant for acute hereditary angioedema (HAE) attacks, including laryngeal attacks. The study will enroll participants from Study PHA022121-C201 (NCT04618211), Study PHA022121-C306 (NCT06343779) and deucrictibant treatment naïve HAE-nC1INH adult participants who elect to participate in this extension study and meet the eligibility requirements.

Read the detailed description

Part A of the study will enroll adult participants from Study PHA022121-C201. The double-blind treatment assignment from Study PHA022121-C201 will be maintained.

Part B is open-label treatment and includes participants rolling over from Part A, participants from Study PHA022121-C201 who did not participate in Part A, participants aged 12 years and older with HAE type I, type II, or HAE-nC1INH rolling over from Study PHA022121-C306, and deucrictibant treatment naïve adult participants with HAE-nC1INH who elect to participate in this extension study and meet the eligibility requirements.

Being tested
deucrictibant
Keywords
HAE, HAE Type I, HAE Type II, Oral Treatment, Bradykinin B2 Receptor Antagonists, On-Demand, PHA121, PHVS416, PHA-022121, Deucrictibant, HAE Type III, HAE-nC1INH
Medical subject headings
Angioedemas, Hereditary, Hereditary Angioedema Types I and II, Hereditary Angioedema Type III

What participants receive

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

  • deucrictibantDrug

    Also called PHVS416, PHA121, PHA-022121

    3 capsules of deucrictibant or matching placebo will be administered orally for each HAE attack

  • deucrictibantDrug

    Also called PHVS416, PHA121, PHA-022121

    deucrictibant soft capsules will be administered orally for each HAE attack

Study groups in NCT05396105
Study groupRoleWhat they receive
Part A: Deucrictibant, blinded doseExperimentalParticipants will receive the dose of deucrictibant they were randomized to in the PHA022121-C201 study (low, medium, or high dose, each consisting of 3 capsules of deucrictibant or matching placebo) for oral use for on-demand treatment of HAE attacks.
Receives: Drug: deucrictibant
Part B: Deucrictibant, open-labelExperimentalParticipants will receive deucrictibant soft capsules for oral use for on-demand treatment of HAE attacks.
Receives: Drug: deucrictibant

What is being measured

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

  1. Treatment-emergent Adverse Events (TEAEs), treatment-related TEAEs, treatment-emergent serious adverse events (TESAEs), treatment-related TESAEs, and TEAEs leading to deucrictibant discontinuation

    Measured: From enrollment through study completion, up to 54 months (dependent on time of enrollment).

  2. Heart Rate

    Descriptive in nature, no formal statistical hypothesis testing will be performed.

    Measured: From enrollment through study completion, up to 54 months (dependent on time of enrollment).

  3. Blood pressure

    Systolic and diastolic blood pressure will be measured. Descriptive in nature, no formal statistical hypothesis testing will be performed.

    Measured: From enrollment through study completion, up to 54 months (dependent on time of enrollment).

  4. Body temperature

    Descriptive in nature, no formal statistical hypothesis testing will be performed.

    Measured: From enrollment through study completion, up to 54 months (dependent on time of enrollment).

  5. Clinical laboratory tests

    hematology, blood chemistry, urinalysis

    Measured: From enrollment through study completion, up to 54 months (dependent on time of enrollment).

  6. Electrocardiograms

    Measured: From enrollment through study completion, up to 54 months (dependent on time of enrollment).

  7. Physical Examination

    Measured: From enrollment through study completion, up to 54 months (dependent on time of enrollment).

Secondary outcomes (8)
  1. Time to onset of symptom relief, defined as Patient Global Impression of Change (PGI-C) rating of at least "a little better" for 2 consecutive timepoints within 12 hours post-treatment

    PGI-C evaluates the change in the attack symptoms over time with a 7-point response scale.

    Measured: Assessed from 1 hour to 12 hours post-treatment

  2. Time to substantial symptom relief, defined as achieving PGI-C rating of at least "better" for 2 consecutive timepoints within 12 hours post-treatment

    PGI-C evaluates the change in the attack symptoms over time with a 7-point response scale.

    Measured: Assessed from 1 hour to 12 hours post-treatment

  3. Time to substantial symptom relief by Patient Global Impression of Severity (PGI-S), defined as achieving ≥1 point reduction in PGI-S from pre-treatment for 2 consecutive timepoints within 12 hours post-treatment

    PGI-S evaluates the severity of attack symptoms with a 5-point response scale.

    Measured: Assessed from pre-treatment to 12 hours post-treatment

  4. Proportion of attacks achieving symptom resolution, defined as achieving PGI-S rating of "none" at 24 hours post-treatment.

    Measured: At 24 hours post-treatment

  5. Proportion of deucrictibant-treated attacks requiring rescue medication within 24 hours post-treatment

    Measured: Assessed from pre-treatment to 24 hours post-treatment

  6. Time to onset of symptom relief, assessed by a ≥30% reduction in VAS-3/ VAS-5 (Part A) or AMRA (Part B) composite score from the pre-treatment score

    VAS/AMRA scores range between 0 and 100. A larger reduction means a better outcome.

    Measured: Assessed from pre-treatment to 48 hours post-treatment

  7. Time to substantial symptom relief by VAS-3/ VAS-5 (Part A) or AMRA (Part B), defined as a ≥50% reduction in VAS-3/ VAS-5 (Part A) or AMRA (Part B) composite score from pre-treatment for 2 consecutive timepoints within 12 hours post-treatment

    VAS/AMRA scores range between 0 and 100. A larger reduction means a better outcome.

    Measured: Assessed from pre-treatment to 12 hours post-treatment

  8. Proportion of study drug-treated attacks reaching almost complete or complete symptom relief by VAS-3/ VAS-5 (Part A) or AMRA (Part B), defined as all item scores in VAS-3/ VAS-5/ AMRA having a value ≤10 at 24 hours post-treatment

    Almost complete or complete symptom relief is defined as all individual item scores in VAS/AMRA having a value ≤10 sustained for 2 consecutive timepoints.

    Measured: At 24 hours post-treatment

Timeline

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

  1. First posted31 May 2022
  2. Study start28 Dec 2022
  3. Primary completionJun 2027 (estimated)
  4. Study completionJun 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 2/3
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrolment
150 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT05396105
Sponsor's protocol ID
PHA022121-C303
Other IDs
2023-505766-28-00, 2023
Acronym
RAPIDe-2
Status last verified
Jun 2026
First submitted
28 Apr 2022
Last updated
21 Jul 2026
Results posted
No
Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No
Individual data sharing
No

Questions about this trial

What is this clinical trial studying?

A Phase 2/3 study testing deucrictibant in people with Hereditary Angioedema and Hereditary Angioedema Type I, run by Pharvaris Netherlands B.V. at 60 sites in 24 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 13 inclusion and 14 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: enrolling by invitation, as of the sponsor's last update on 21 Jul 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 60 sites in United States, Italy, Japan, Brazil, Germany and 19 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 combined 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.

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?

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?

Treatment-emergent Adverse Events (TEAEs), treatment-related TEAEs, treatment-emergent serious adverse events (TESAEs), treatment-related TESAEs, and TEAEs leading to deucrictibant discontinuation (time frame: From enrollment through study completion, up to 54 months (dependent on time of enrollment).). The study lists 7 primary outcomes in all. 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 21 Jul 2026.

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