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An Open-label Extension Trial to Evaluate the Long-term Safety of KVD900 (Sebetralstat) for On-Demand Treatment of Angioedema Attacks in Adolescent and Adult Patients With Hereditary Angioedema (HAE)

Study Purpose

This is an open-label, multicenter extension trial to evaluate the long-term safety of KVD900 in patients who are 12 years or older with HAE type I or II.

Recruitment Criteria

Accepts Healthy Volunteers

Healthy volunteers are participants who do not have a disease or condition, or related conditions or symptoms

No
Study Type

An interventional clinical study is where participants are assigned to receive one or more interventions (or no intervention) so that researchers can evaluate the effects of the interventions on biomedical or health-related outcomes.


An observational clinical study is where participants identified as belonging to study groups are assessed for biomedical or health outcomes.


Searching Both is inclusive of interventional and observational studies.

Interventional
Eligible Ages 12 Years and Over
Gender All
More Inclusion & Exclusion Criteria

Patients may roll over from KVD900-301.

Inclusion Criteria:

1. Confirmed diagnosis of HAE type I or II at any time in the medical history. 2. Patient has had at least 2 documented HAE attacks within 3 months prior to the Enrollment Visit. 3. If a patient is receiving long-term prophylactic treatment with one of the protocol-allowed therapies, they must have been on a stable dose and regimen for at least 3 months prior to the Enrollment Visit (except for danazol, which requires a stable dose and regimen for at least 6 months prior to the Enrollment Visit). 4. Male or female patients 12 years of age and older. 5. Patients must meet the contraception requirements. 6. Patients must be able to swallow trial tablets whole. 7. Patients, as assessed by the Investigator, must be able to appropriately receive and store IMP, and be able to read, understand, and complete the eDiary. 8. Investigator believes that the patient is willing and able to adhere to all protocol requirements. 9. Patient provides signed informed consent or assent (when applicable). A parent or legally authorized representative (LAR) must also provide signed informed consent when required.

Exclusion Criteria:

1. Discontinued from the KVD900-301 trial for reasons of noncompliance, withdrawal of consent, or safety. 2. Presence of any safety concerns that would preclude participation in the open-label trial as determined by the investigator. 3. Any concomitant diagnosis of another form of chronic angioedema, such as acquired C1 inhibitor deficiency, HAE with normal C1-INH (previously known as HAE type III), idiopathic angioedema, or angioedema associated with urticaria. 4. A clinically significant history of poor response to bradykinin receptor 2 (BR2) blocker, C1-INH therapy, or plasma kallikrein inhibitor therapy for the management of HAE, in the opinion of the Investigator. 5. Use of attenuated androgens other than danazol (e.g., stanozolol, oxandrolone, methyltestosterone, testosterone), or anti-fibrinolytics (e.g., tranexamicacid) within 28 days prior to the Enrollment Visit. 6. Use of Angiotensin-converting enzyme (ACE) inhibitors within 7 days prior to the Enrollment Visit. 7. Any estrogen-containing medications with systemic absorption (such as oral contraceptives including ethinylestradiol or hormonal replacement therapy) within 7 days prior to the Enrollment Visit. 8. Inadequate organ function, including but not limited to: 1. Alanine aminotransferase (ALT) >2x Upper Limit Normal (ULN) 2. Aspartate aminotransferase (AST) >2x ULN. 3. Bilirubin direct >1.25x ULN. 4. International Normalized Ratio (INR) >1.2. 5. Clinically significant hepatic impairment defined as a Child-Pugh B or C. 9. Any clinically significant comorbidity or systemic dysfunction, which in the opinion of the Investigator, would jeopardize the safety of the patient by participating in the trial. 10. History of substance abuse or dependence that would interfere with the completion of the trial, as determined by the Investigator. 11. Known hypersensitivity to KVD900 or to any of the excipients. 12. Participation in any gene therapy treatment or trial for HAE. 13. Participation in any interventional investigational clinical trial, including an investigational COVID-19 vaccine trial, within 4 weeks of the last dosing of investigational drug prior to the Enrollment Visit. 14. Any pregnant or breastfeeding patient.

Trial Details

Trial ID:

This trial id was obtained from ClinicalTrials.gov, a service of the U.S. National Institutes of Health, providing information on publicly and privately supported clinical studies of human participants with locations in all 50 States and in 196 countries.

NCT05505916
Phase

Phase 1: Studies that emphasize safety and how the drug is metabolized and excreted in humans.

Phase 2: Studies that gather preliminary data on effectiveness (whether the drug works in people who have a certain disease or condition) and additional safety data.

Phase 3: Studies that gather more information about safety and effectiveness by studying different populations and different dosages and by using the drug in combination with other drugs.

Phase 4: Studies occurring after FDA has approved a drug for marketing, efficacy, or optimal use.

Phase 3
Lead Sponsor

The sponsor is the organization or person who oversees the clinical study and is responsible for analyzing the study data.

KalVista Pharmaceuticals, Ltd.
Principal Investigator

The person who is responsible for the scientific and technical direction of the entire clinical study.

Study Director
Principal Investigator Affiliation KalVista Pharmaceuticals, Ltd.
Agency Class

Category of organization(s) involved as sponsor (and collaborator) supporting the trial.

Industry
Overall Status Active, not recruiting
Countries Australia, Austria, Bulgaria, Canada, France, Germany, Greece, Hungary, Israel, Italy, Japan, Netherlands, New Zealand, North Macedonia, Poland, Portugal, Romania, Saudi Arabia, Slovakia, South Africa, Spain, United Kingdom, United States
Conditions

The disease, disorder, syndrome, illness, or injury that is being studied.

Hereditary Angioedema
Arms & Interventions

Arms

Experimental: KVD900 600 mg

Experimental: KVD900 300 mg

Interventions

Drug: - KVD900 600 mg

KVD900 Tablet 600 mg (2 x 300 mg)

Drug: - KVD900 300 mg

KVD900 Tablet 300 mg

Contact a Trial Team

If you are interested in learning more about this trial, find the trial site nearest to your location and contact the site coordinator via email or phone. We also strongly recommend that you consult with your healthcare provider about the trials that may interest you and refer to our terms of service below.

KalVista Investigative Site, Scottsdale, Arizona

Status

Address

KalVista Investigative Site

Scottsdale, Arizona, 85251

KalVista Investigative Site, Little Rock, Arkansas

Status

Address

KalVista Investigative Site

Little Rock, Arkansas, 72205

KalVista Investigative Site, San Diego, California

Status

Address

KalVista Investigative Site

San Diego, California, 92122

KalVista Investigative Site, San Diego, California

Status

Address

KalVista Investigative Site

San Diego, California, 92123

KalVista Investigative Site, Santa Monica, California

Status

Address

KalVista Investigative Site

Santa Monica, California, 90404

KalVista Investigative Site, Centennial, Colorado

Status

Address

KalVista Investigative Site

Centennial, Colorado, 80112

KalVista Investigative Site, Colorado Springs, Colorado

Status

Address

KalVista Investigative Site

Colorado Springs, Colorado, 80907

KalVista Investigative Site, Evansville, Indiana

Status

Address

KalVista Investigative Site

Evansville, Indiana, 47715

KalVista Investigative Site, Overland Park, Kansas

Status

Address

KalVista Investigative Site

Overland Park, Kansas, 66211

KalVista Investigative Site, Louisville, Kentucky

Status

Address

KalVista Investigative Site

Louisville, Kentucky, 40215

KalVista Investigative Site, Chevy Chase, Maryland

Status

Address

KalVista Investigative Site

Chevy Chase, Maryland, 20815

KalVista Investigative Site, Plymouth, Minnesota

Status

Address

KalVista Investigative Site

Plymouth, Minnesota, 55446

KalVista Investigative Site, Saint Louis, Missouri

Status

Address

KalVista Investigative Site

Saint Louis, Missouri, 63141

KalVista Investigative Site, Charlotte, North Carolina

Status

Address

KalVista Investigative Site

Charlotte, North Carolina, 28277

KalVista Investigative Site, Cincinnati, Ohio

Status

Address

KalVista Investigative Site

Cincinnati, Ohio, 45236

KalVista Investigative Site, Toledo, Ohio

Status

Address

KalVista Investigative Site

Toledo, Ohio, 43617

KalVista Investigative Site, Hershey, Pennsylvania

Status

Address

KalVista Investigative Site

Hershey, Pennsylvania, 17033

KalVista Investigative Site, Dallas, Texas

Status

Address

KalVista Investigative Site

Dallas, Texas, 75231

KalVista Investgative Site, Layton, Utah

Status

Address

KalVista Investgative Site

Layton, Utah, 84041

KalVista Investigative Site, Spokane, Washington

Status

Address

KalVista Investigative Site

Spokane, Washington, 99204

International Sites

KalVista Investigative Site, Campbelltown, Australia

Status

Address

KalVista Investigative Site

Campbelltown, , 2560

KalVista Investigative Site, Wein, Austria

Status

Address

KalVista Investigative Site

Wein, , 1090

KalVista Investigative Site, Sofia, Bulgaria

Status

Address

KalVista Investigative Site

Sofia, , 1431

KalVista Investigative Site, Montréal, Canada

Status

Address

KalVista Investigative Site

Montréal, , H2W 1R7

KalVista Investigative Site, Grenoble Cedex 9, France

Status

Address

KalVista Investigative Site

Grenoble Cedex 9, , 38043

KalVista Investigative Site, Lille Cedex, France

Status

Address

KalVista Investigative Site

Lille Cedex, , 59037

KalVista Investigative Site, Lille, France

Status

Address

KalVista Investigative Site

Lille, , 59037

KalVista Investigative Site, Paris, France

Status

Address

KalVista Investigative Site

Paris, , 75012

KalVista Investigative Site, Berlin, Germany

Status

Address

KalVista Investigative Site

Berlin, , 12203

KalVista Investigative Site, Frankfurt, Germany

Status

Address

KalVista Investigative Site

Frankfurt, , 60590

KalVista Investigative Site, Mainz, Germany

Status

Address

KalVista Investigative Site

Mainz, , 55131

KalVista Investigative Site, Morfelden-Walldorf, Germany

Status

Address

KalVista Investigative Site

Morfelden-Walldorf, , 64546

KalVista Investigative Site, Athens, Greece

Status

Address

KalVista Investigative Site

Athens, , 11521

KalVista Investigative Site, Athens, Greece

Status

Address

KalVista Investigative Site

Athens, , 11527

KalVista Investigative Site, Budapest, Hungary

Status

Address

KalVista Investigative Site

Budapest, , 1088

KalVista Investigative Site, Haifa, Israel

Status

Address

KalVista Investigative Site

Haifa, , 31048

KalVista Investigative Site, Petach Tikvah, Israel

Status

Address

KalVista Investigative Site

Petach Tikvah, , 4920235

KalVista Investigative Site, Ramat Gan, Israel

Status

Address

KalVista Investigative Site

Ramat Gan, , 52621

KalVista Investigative Site, Tel Aviv, Israel

Status

Address

KalVista Investigative Site

Tel Aviv, , 64239

KalVista Investigative Site, Padova, Italy

Status

Address

KalVista Investigative Site

Padova, , 35128

KalVista Investigative Site, Palermo, Italy

Status

Address

KalVista Investigative Site

Palermo, , 90146

KalVista Investigative Site, Roma, Italy

Status

Address

KalVista Investigative Site

Roma, , 00133

KalVista Investigative Site, San Donato Milanese, Italy

Status

Address

KalVista Investigative Site

San Donato Milanese, , 20097

KalVista Investigative Site, Sapporo-city, Hokkaido, Japan

Status

Address

KalVista Investigative Site

Sapporo-city, Hokkaido, 002-8072

KalVista Investigative Site, Chiba-shi, Japan

Status

Address

KalVista Investigative Site

Chiba-shi, , 260-8677

KalVista Investigative Site, Hiroshima-shi, Japan

Status

Address

KalVista Investigative Site

Hiroshima-shi, , 730-8518

KalVista Investigative Site, Kawagoe-shi, Japan

Status

Address

KalVista Investigative Site

Kawagoe-shi, , 350-8550

KalVista Investigative Site, Maebashi-city, Japan

Status

Address

KalVista Investigative Site

Maebashi-city, , 371-8511

KalVista Investigative Site, Soka-shi, Japan

Status

Address

KalVista Investigative Site

Soka-shi, , 340-0041

KalVista Investigative Site, Takatsuki-shi, Japan

Status

Address

KalVista Investigative Site

Takatsuki-shi, , 569-8686

KalVista Investgative Site, Tokyo, Japan

Status

Address

KalVista Investgative Site

Tokyo, , 142-8666

KalVista Investigative Site, Yokohama-shi, Japan

Status

Address

KalVista Investigative Site

Yokohama-shi, , 236-0004

KalVista Investigative Site, Amsterdam, Netherlands

Status

Address

KalVista Investigative Site

Amsterdam, , 1105 AZ

KalVista Investigative Site, Auckland, New Zealand

Status

Address

KalVista Investigative Site

Auckland, , 1023

KalVista Investigative Site, Skopje, North Macedonia

Status

Address

KalVista Investigative Site

Skopje, , 1000

KalVista Investigative Site, Kraków, Poland

Status

Address

KalVista Investigative Site

Kraków, , 31-503

KalVista Investigative Site, Łódź, Poland

Status

Address

KalVista Investigative Site

Łódź, , 92-213

KalVista Investigative Site, Porto, Portugal

Status

Address

KalVista Investigative Site

Porto, , 4200-319

KalVista Investigative Site, Sângeorgiu De Mureş, Romania

Status

Address

KalVista Investigative Site

Sângeorgiu De Mureş, , 547530

KalVista Investigative Site, Riyadh, Saudi Arabia

Status

Address

KalVista Investigative Site

Riyadh, , 11211

KalVista Investigative Site, Martin, Slovakia

Status

Address

KalVista Investigative Site

Martin, , 036 59

Kalvista Investigative Site, Cape Town, South Africa

Status

Address

Kalvista Investigative Site

Cape Town, , 7700

KalVista Investigative Site, Barcelona, Spain

Status

Address

KalVista Investigative Site

Barcelona, , 08035

KalVista Investigative Site, Barcelona, Spain

Status

Address

KalVista Investigative Site

Barcelona, , 08907

KalVista Investigative Site, Madrid, Spain

Status

Address

KalVista Investigative Site

Madrid, , 28046

KalVista Investigative Site, Birmingham, United Kingdom

Status

Address

KalVista Investigative Site

Birmingham, , B9 5SS

KalVista Investigative Site, Cambridge, United Kingdom

Status

Address

KalVista Investigative Site

Cambridge, , CB2 0QQ

KalVista Investigative Site, Cardiff, United Kingdom

Status

Address

KalVista Investigative Site

Cardiff, , CF14 4XW

KalVista Investigative Site, Frimley, United Kingdom

Status

Address

KalVista Investigative Site

Frimley, , GU16 7UJ

KalVista Investigative Site, Leeds, United Kingdom

Status

Address

KalVista Investigative Site

Leeds, , LS9 7TF

KalVista Investigative Site, London, United Kingdom

Status

Address

KalVista Investigative Site

London, , E1 2ES

KalVista Investigative Site, London, United Kingdom

Status

Address

KalVista Investigative Site

London, , NW3 2QG

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