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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 5313457, Arizona 5551752

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Address

KalVista Investigative Site

Scottsdale 5313457, Arizona 5551752, 85251

KalVista Investigative Site, Little Rock 4119403, Arkansas 4099753

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Address

KalVista Investigative Site

Little Rock 4119403, Arkansas 4099753, 72205

KalVista Investigative Site, San Diego 5391811, California 5332921

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KalVista Investigative Site

San Diego 5391811, California 5332921, 92122

KalVista Investigative Site, San Diego 5391811, California 5332921

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KalVista Investigative Site

San Diego 5391811, California 5332921, 92123

KalVista Investigative Site, Santa Monica 5393212, California 5332921

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KalVista Investigative Site

Santa Monica 5393212, California 5332921, 90404

KalVista Investigative Site, Centennial 5416541, Colorado 5417618

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KalVista Investigative Site

Centennial 5416541, Colorado 5417618, 80112

KalVista Investigative Site, Colorado Springs 5417598, Colorado 5417618

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KalVista Investigative Site

Colorado Springs 5417598, Colorado 5417618, 80907

KalVista Investigative Site, Evansville 4257227, Indiana 4921868

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KalVista Investigative Site

Evansville 4257227, Indiana 4921868, 47715

KalVista Investigative Site, Overland Park 4276873, Kansas 4273857

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KalVista Investigative Site

Overland Park 4276873, Kansas 4273857, 66211

KalVista Investigative Site, Louisville 4299276, Kentucky 6254925

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KalVista Investigative Site

Louisville 4299276, Kentucky 6254925, 40215

KalVista Investigative Site, Chevy Chase 4351335, Maryland 4361885

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KalVista Investigative Site

Chevy Chase 4351335, Maryland 4361885, 20815

KalVista Investigative Site, Plymouth 5041926, Minnesota 5037779

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KalVista Investigative Site

Plymouth 5041926, Minnesota 5037779, 55446

KalVista Investigative Site, St Louis 4407066, Missouri 4398678

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Address

KalVista Investigative Site

St Louis 4407066, Missouri 4398678, 63141

KalVista Investigative Site, Charlotte 4460243, North Carolina 4482348

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Address

KalVista Investigative Site

Charlotte 4460243, North Carolina 4482348, 28277

KalVista Investigative Site, Cincinnati 4508722, Ohio 5165418

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Address

KalVista Investigative Site

Cincinnati 4508722, Ohio 5165418, 45236

KalVista Investigative Site, Toledo 5174035, Ohio 5165418

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Address

KalVista Investigative Site

Toledo 5174035, Ohio 5165418, 43617

KalVista Investigative Site, Hershey 5193342, Pennsylvania 6254927

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Address

KalVista Investigative Site

Hershey 5193342, Pennsylvania 6254927, 17033

KalVista Investigative Site, Dallas 4684888, Texas 4736286

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Address

KalVista Investigative Site

Dallas 4684888, Texas 4736286, 75231

KalVista Investgative Site, Layton 5777107, Utah 5549030

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Address

KalVista Investgative Site

Layton 5777107, Utah 5549030, 84041

KalVista Investigative Site, Spokane 5811696, Washington 5815135

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Address

KalVista Investigative Site

Spokane 5811696, Washington 5815135, 99204

International Sites

KalVista Investigative Site, Campbelltown 2172586, Australia

Status

Address

KalVista Investigative Site

Campbelltown 2172586, , 2560

KalVista Investigative Site, Wein, Austria

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Address

KalVista Investigative Site

Wein, , 1090

KalVista Investigative Site, Sofia 727011, Bulgaria

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Address

KalVista Investigative Site

Sofia 727011, , 1431

KalVista Investigative Site, Montreal 6077243, Canada

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Address

KalVista Investigative Site

Montreal 6077243, , H2W 1R7

KalVista Investigative Site, Grenoble 3014728, France

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Address

KalVista Investigative Site

Grenoble 3014728, , 38043

KalVista Investigative Site, Lille 2998324, France

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Address

KalVista Investigative Site

Lille 2998324, , 59037

KalVista Investigative Site, Paris 2988507, France

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Address

KalVista Investigative Site

Paris 2988507, , 75012

KalVista Investigative Site, Berlin 2950159, Germany

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Address

KalVista Investigative Site

Berlin 2950159, , 12203

KalVista Investigative Site, Frankfurt 2925536, Germany

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Address

KalVista Investigative Site

Frankfurt 2925536, , 60590

KalVista Investigative Site, Mainz 2874225, Germany

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Address

KalVista Investigative Site

Mainz 2874225, , 55131

KalVista Investigative Site, Mörfelden-Walldorf 3272460, Germany

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Address

KalVista Investigative Site

Mörfelden-Walldorf 3272460, , 64546

KalVista Investigative Site, Athens 264371, Greece

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Address

KalVista Investigative Site

Athens 264371, , 11521

KalVista Investigative Site, Athens 264371, Greece

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Address

KalVista Investigative Site

Athens 264371, , 11527

KalVista Investigative Site, Budapest 3054643, Hungary

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Address

KalVista Investigative Site

Budapest 3054643, , 1088

KalVista Investigative Site, Haifa 294801, Israel

Status

Address

KalVista Investigative Site

Haifa 294801, , 31048

KalVista Investigative Site, Petach Tikvah, Israel

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Address

KalVista Investigative Site

Petach Tikvah, , 4920235

KalVista Investigative Site, Ramat Gan 293788, Israel

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Address

KalVista Investigative Site

Ramat Gan 293788, , 52621

KalVista Investigative Site, Tel Aviv 293397, Israel

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Address

KalVista Investigative Site

Tel Aviv 293397, , 64239

KalVista Investigative Site, Padua 3171728, Italy

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Address

KalVista Investigative Site

Padua 3171728, , 35128

KalVista Investigative Site, Palermo 2523920, Italy

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Address

KalVista Investigative Site

Palermo 2523920, , 90146

KalVista Investigative Site, Roma 8957247, Italy

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Address

KalVista Investigative Site

Roma 8957247, , 00133

KalVista Investigative Site, San Donato Milanese 3168414, Italy

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Address

KalVista Investigative Site

San Donato Milanese 3168414, , 20097

KalVista Investigative Site, Sapporo 2128295, Hokkaido 2130037, Japan

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Address

KalVista Investigative Site

Sapporo 2128295, Hokkaido 2130037, 002-8072

KalVista Investigative Site, Chiba 2113015, Japan

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Address

KalVista Investigative Site

Chiba 2113015, , 260-8677

KalVista Investigative Site, Hiroshima 1862415, Japan

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Address

KalVista Investigative Site

Hiroshima 1862415, , 730-8518

KalVista Investigative Site, Kawagoe-shi, Japan

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Address

KalVista Investigative Site

Kawagoe-shi, , 350-8550

KalVista Investigative Site, Maebashi 1857843, Japan

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Address

KalVista Investigative Site

Maebashi 1857843, , 371-8511

KalVista Investigative Site, Soka-shi, Japan

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Address

KalVista Investigative Site

Soka-shi, , 340-0041

KalVista Investigative Site, Takatsuki-shi, Japan

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Address

KalVista Investigative Site

Takatsuki-shi, , 569-8686

KalVista Investgative Site, Tokyo 1850147, Japan

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Address

KalVista Investgative Site

Tokyo 1850147, , 142-8666

KalVista Investigative Site, Yokohama 1848354, Japan

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Address

KalVista Investigative Site

Yokohama 1848354, , 236-0004

KalVista Investigative Site, Amsterdam 2759794, Netherlands

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Address

KalVista Investigative Site

Amsterdam 2759794, , 1105 AZ

KalVista Investigative Site, Auckland 2193733, New Zealand

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Address

KalVista Investigative Site

Auckland 2193733, , 1023

KalVista Investigative Site, Skopje 785842, North Macedonia

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Address

KalVista Investigative Site

Skopje 785842, , 1000

KalVista Investigative Site, Krakow 3094802, Poland

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Address

KalVista Investigative Site

Krakow 3094802, , 31-503

KalVista Investigative Site, Lodz 3093133, Poland

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Address

KalVista Investigative Site

Lodz 3093133, , 92-213

KalVista Investigative Site, Porto 2735943, Portugal

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Address

KalVista Investigative Site

Porto 2735943, , 4200-319

KalVista Investigative Site, Sângeorgiu de Mureş 667034, Romania

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Address

KalVista Investigative Site

Sângeorgiu de Mureş 667034, , 547530

KalVista Investigative Site, Riyadh 108410, Saudi Arabia

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Address

KalVista Investigative Site

Riyadh 108410, , 11211

KalVista Investigative Site, Martin 3058780, Slovakia

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Address

KalVista Investigative Site

Martin 3058780, , 036 59

Kalvista Investigative Site, Cape Town 3369157, South Africa

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Address

Kalvista Investigative Site

Cape Town 3369157, , 7700

KalVista Investigative Site, Barcelona 3128760, Spain

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Address

KalVista Investigative Site

Barcelona 3128760, , 08035

KalVista Investigative Site, Barcelona 3128760, Spain

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Address

KalVista Investigative Site

Barcelona 3128760, , 08907

KalVista Investigative Site, Madrid 3117735, Spain

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Address

KalVista Investigative Site

Madrid 3117735, , 28046

KalVista Investigative Site, Birmingham 2655603, United Kingdom

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Address

KalVista Investigative Site

Birmingham 2655603, , B9 5SS

KalVista Investigative Site, Cambridge 2653941, United Kingdom

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Address

KalVista Investigative Site

Cambridge 2653941, , CB2 0QQ

KalVista Investigative Site, Cardiff 2653822, United Kingdom

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Address

KalVista Investigative Site

Cardiff 2653822, , CF14 4XW

KalVista Investigative Site, Frimley 2649052, United Kingdom

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Address

KalVista Investigative Site

Frimley 2649052, , GU16 7UJ

KalVista Investigative Site, Leeds 2644688, United Kingdom

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Address

KalVista Investigative Site

Leeds 2644688, , LS9 7TF

KalVista Investigative Site, London 2643743, United Kingdom

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Address

KalVista Investigative Site

London 2643743, , E1 2ES

KalVista Investigative Site, London 2643743, United Kingdom

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Address

KalVista Investigative Site

London 2643743, , NW3 2QG

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