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Hereditary Angioedema (HAE)Phase 3NCT02586805

Efficacy and Safety Study of DX-2930 to Prevent Acute Angioedema Attacks in Patients With Type I and Type II HAE

A Phase 3 study testing DX-2930 - 300mg/2wk, DX-2930 - 300mg/4wk and DX-2930 - 150mg/4wk in people with Hereditary Angioedema (HAE), run by Shire at 41 sites in 7 countries.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
Search all trials

Trial summary

This is a phase 3, multicenter, randomized, double-blind, placebo-controlled trial to evaluate the efficacy and safety of DX-2930 in preventing acute angioedema attacks in patients with Type I and Type II HAE. Read more about this study

Who is it for?
Ages 12 years and older
Conditions the study is for
Hereditary Angioedema (HAE)
What is being tested?
DX-2930 - 300mg/2wk, DX-2930 - 300mg/4wk and DX-2930 - 150mg/4wk
Type of treatment
Injection or infusion
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
125 participants
Where
41 sitesin 7 countries
Study dates
3 Mar 2016to 13 Apr 2017
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 12 years and older
  • All sexes
  • No healthy volunteers
  • Child, Adult, Older adult

Who may be able to join

  • Males and females 12 years of age or older at time of screening
  • Documented diagnosis of HAE, Type I or II
  • Baseline rate of at least 1 Investigator-confirmed HAE attack per 4 weeks
  • Adult subjects and caregivers of subjects under the age of 18 are willing and able to read, understand, and sign an informed consent form. Subjects age 12 to 17, whose caregiver provides informed consent, are willing and able to read, understand an dsign an assent form.
  • Males and femailes who are fertile and sexually active must adhere to contraception requirements.

Who cannot join

  • Concomitant diagnosis of another form of chronic, recurrent angioedema, such as acquired angioedema, idiopathic angioedema, or recurrent angioedema associated with urticaria.
  • Participation in a prior DX-2930 study
  • Treatment with any other investigational drug or exposure to an investigational device within 4 weeks prior screening
  • Exposure to angiotensin-converting enzyme (ACE) inhibitors or any estrogen-containing medications within 4 weeks prior to screening.
  • Exposure to androgens within 2 weeks prior to entering the run-in period.
  • Use of long-term prophylactic therapy for HAE within 2 weeks prior to entering the run-in period.
Show all 9Show fewer
  • Use of short-term prophylaxis for HAE within 7 days prior to entering the run-in period.
  • Any of the following liver function test abnormalities: alanine aminotransferase (ALT) > 3x upper limit of normal, or aspartate aminotransferase (AST) > 3x upper limit of normal, or total bilirubin > 2x upper limit of normal (unless the bilirubin elevation is a result of Gilbert's syndrome).
  • Pregnancy or breastfeeding.

Trial locations and contacts

41 sites in 7 countries.

41 sites in 7 countries

United States31 sites
  • University of Michigan Hospital and Health System

    Ann Arbor, Michigan, 48106

  • Austin Regional Clinic

    Austin, Texas, 78731

  • Hudson-Essex Allergy, LLC

    Belleville, New Jersey, 07109

  • Clinical Research Center of Alabama, LLC

    Birmingham, Alabama, 35209

  • Massachusetts General Hospital

    Boston, Massachusetts, 02421

  • IMMUNOe International Health & Research Centers

    Centennial, Colorado, 80112

  • American Health Research

    Charlotte, North Carolina, 28277

  • Institute of Asthma & Allergy, P.C.

    Chevy Chase, Maryland, 20815

  • Bernstein Clinical Research Center, LLC

    Cincinnati, Ohio, 45231

  • Asthma and Allergy Associates, P.C.

    Colorado Springs, Colorado, 80907

  • Optimed Research, LTD

    Columbus, Ohio, 43235

  • AARA Research Center

    Dallas, Texas, 75231

  • Intermountain Clinical Research

    Draper, Utah, 84020

  • Duke Asthma, Allergy and Airway Center

    Durham, North Carolina, 27705

  • Penn State Milton S. Hershey Medical Center

    Hershey, Pennsylvania, 17033

  • University of Kansas Medical Center

    Kansas City, Kansas, 66160

  • Children's Hospital of Wisconsin

    Milwaukee, Wisconsin, 53226

  • Winthrop University Hospital

    Mineola, New York, 11501

  • Allergy Associates of Utah

    Murray, Utah, 84107

  • The Mount Sinai Medical Center

    New York, New York, 10029

  • Atlantic Research Center, LLC

    Ocean City, New Jersey, 07712

  • Midwest Immunology Clinic

    Plymouth, Minnesota, 55446

  • Virginia Commonwealth University

    Richmond, Virginia, 23219

  • UC San Diego School of Medicine

    San Diego, California, 92122

  • AIRE Medical of Los Angeles

    Santa Monica, California, 90404

  • Medical Research of Arizona

    Scottsdale, Arizona, 85251

  • Marycliff Allergy Specialists

    Spokane, Washington, 99202

  • Washington University School of Medicine

    St Louis, Missouri, 63110

  • University of South Florida

    Tampa, Florida, 33613

  • Toledo Institute of Clinical Research

    Toledo, Ohio, 43617

  • Allergy & Asthma Clinical Research

    Walnut Creek, California, 94598

Other trials in United States

Canada3 sites
  • Ottawa Allergy Research Corporation

    Ottawa, Ontario, K1G 6C6

  • Clinique Specialisee en Allergie de la Capitale

    Québec, Quebec, G1V 4M6

  • Gordon Sussman Clinical Research Inc.

    Toronto, Ontario, M4V 1R2

Other trials in Canada

Germany3 sites
  • Charité - University of Berlin

    Berlin, 10117

  • Hautklinik und Poliklinik der Universitätsmedizin

    Mainz, 55131

  • HZRM Hamophilie-Zentrum Rhein Main

    Mörfelden-Walldorf, 64546

Other trials in Germany

Italy1 site
  • Hospital L. Sacco, Milan University

    Milan, 20157

Other trials in Italy

Jordan1 site
  • Triumpharma

    Amman, 11941

Other trials in Jordan

Puerto Rico1 site
  • Sociedad Alergologica

    San Juan, PR, 00918

Other trials in Puerto Rico

United Kingdom1 site
  • Barts Health NHS Trust Clinical Research Centre

    London, E1 2ES

Other trials in United Kingdom

About this study

Official title: HELP Study: A Multicenter, Randomized, Double-Blind, Placebo-Controlled Efficacy and Safety Study to Evaluate DX-2930 For Long-Term Prophylaxis Against Acute Attacks of Hereditary Angioedema (HAE)

This is a phase 3, multicenter, randomized, double-blind, placebo-controlled trial to evaluate the efficacy and safety of DX-2930 in preventing acute angioedema attacks in patients with Type I and Type II HAE.

Being tested
DX-2930 - 300mg/2wk, DX-2930 - 300mg/4wk, DX-2930 - 150mg/4wk, Placebo
Keywords
DX-2930, Hereditary Angioedema, Dyax
Medical subject headings
Angioedemas, Hereditary

What participants receive

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

  • DX-2930 - 300mg/2wkDrug

    300 mg DX-2930 administered every 2 weeks by subcutaneous injection.

  • DX-2930 - 300mg/4wkDrug

    300 mg DX-2930 administered every 4 weeks by subcutaneous injection. To maintain the study blind, subjects will be given placebo injections every other 2 weeks when they are not receiving drug.

  • DX-2930 - 150mg/4wkDrug

    150 mg DX-2930 administered every 4 weeks by subcutaneous injection. To maintain the study blind, subjects will be given placebo injections every other 2 weeks when they are not receiving drug.

  • PlaceboDrug

    Placebo administered every 2 weeks by subcutaneous injection.

Study groups in NCT02586805
Study groupRoleWhat they receive
DX-2930 300 mg every 2 weeksExperimental300 mg DX-2930 administered every 2 weeks by subcutaneous injection.
Receives: Drug: DX-2930 - 300mg/2wk
DX-2930 300 mg every 4 weeksExperimental300 mg DX-2930 administered every 4 weeks by subcutaneous injection
Receives: Drug: DX-2930 - 300mg/4wk
DX-2930 150 mg every 4 weeksExperimental150 mg DX-2930 administered every 4 weeks by subcutaneous injection
Receives: Drug: DX-2930 - 150mg/4wk
PlaceboPlacebo comparatorPlacebo administered every 2 weeks by subcutaneous injection.
Receives: Drug: Placebo

What is being measured

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

  1. Rate of Investigator Confirmed Hereditary Angioedema (HAE) Attacks During Treatment Period

    HAE attack was defined as a discrete episode during which the participant progressed from no angioedema to symptoms of angioedema. Rate of investigator confirmed HAE attacks was analyzed using a generalized linear model (GLM) for count data assuming a poisson distribution with a log link function and Pearson chi-square scaling of standard errors to account for potential overdispersion. The logarithm of time in days each subject was observed during the treatment period was used as an offset variable in the model.

    Measured: From Day 0 to Day 182

Secondary outcomes (3)
  1. Rate of Investigator Confirmed Hereditary Angioedema (HAE) Attack Requiring Acute Treatment

    HAE attack was defined as a discrete episode during which the participant progressed from no angioedema to symptoms of angioedema. Rate of investigator confirmed HAE attack was analyzed using the GLM for count data assuming a poisson distribution with a log link function and Pearson chi-square scaling of standard errors to account for potential overdispersion. The logarithm of time in days each subject was observed during the treatment period was used as an offset variable in the model.

    Measured: From Day 0 to Day 182

  2. Rate of Moderate or Severe Investigator Confirmed Hereditary Angioedema (HAE) Attacks

    HAE attack was defined as a discrete episode during which the participant progressed from no angioedema to symptoms of angioedema. Moderate and severe investigator-confirmed HAE attacks were the attacks that were moderate or severe as per the HAE attack assessment and reporting procedures (HAARP) defined severity. The overall severity of attack was determined by the investigator using following definitions: mild (transient or mild discomfort), moderate (mild to moderate limitation in activity), severe (marked limitation in activity). Rate of moderate or severe investigator confirmed HAE attack was analyzed using the GLM for count data assuming a poisson distribution with a log link function and Pearson chi-square scaling of standard errors to account for potential overdispersion. The logarithm of time in days each subject was observed during the treatment period was used as an offset variable in the model.

    Measured: From Day 0 to Day 182

  3. Rate of Investigator Confirmed Hereditary Angioedema (HAE) Attacks During Day 14 Through Day 182

    HAE attack was defined as a discrete episode during which the participant progressed from no angioedema to symptoms of angioedema. Rate of investigator confirmed HAE attacks during day 14 after study drug administration through day 182 was analyzed by the same poisson regression model as in the primary endpoint analysis.

    Measured: From Day 14 to Day 182

Timeline

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

  1. First posted26 Oct 2015 (estimated)
  2. Study start3 Mar 2016
  3. Primary completion13 Apr 2017
  4. Study completion13 Apr 2017

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
Prevention
Allocation
Randomised
Intervention model
Parallel groups
Masking
Quadruple blind
Who is masked
Participant, Care provider, Investigator, Outcomes assessor
Enrolment
125 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT02586805
Sponsor's protocol ID
DX-2930-03
Other IDs
2015-003943-20, 2015
Status last verified
May 2021
First submitted
23 Oct 2015
Last updated
2 Jun 2021
Data monitoring committee
Yes
Individual data sharing
Yes: Takeda provides access to the de-identified individual participant data (IPD) for eligible studies to aid qualified researchers in addressing legitimate scientific objectives (Takeda's data sharing commitment is available on https://clinicaltrials.takeda.com/takedas-commitment?commitment=5). These IPDs will be provided in a secure research environment following approval of a data sharing request, and under the terms of a data sharing agreement.

Publications

  • Lumry WR, Maurer M, Weller K, Riedl MA, Watt M, Yu M, Devercelli G, Meunier J, Banerji A; HELP OLE Study Group. Long-term lanadelumab treatment improves health-related quality of life in patients with hereditary angioedema. Ann Allergy Asthma Immunol. 2023 Jul;131(1):101-108.e3. doi: 10.1016/j.anai.2023.03.028. Epub 2023 Apr 5.

    PubMed 37028510
  • Beard N, Frese M, Smertina E, Mere P, Katelaris C, Mills K. Interventions for the long-term prevention of hereditary angioedema attacks. Cochrane Database Syst Rev. 2022 Nov 3;11(11):CD013403. doi: 10.1002/14651858.CD013403.pub2.

    PubMed 36326435
  • Craig TJ, Zaragoza-Urdaz RH, Li HH, Yu M, Ren H, Juethner S, Anderson J; HELP and HELP OLE Study Investigators. Effectiveness and safety of lanadelumab in ethnic and racial minority subgroups of patients with hereditary angioedema: results from phase 3 studies. Allergy Asthma Clin Immunol. 2022 Sep 24;18(1):85. doi: 10.1186/s13223-022-00721-y.

    PubMed 36153561
  • Banerji A, Riedl MA, Bernstein JA, Cicardi M, Longhurst HJ, Zuraw BL, Busse PJ, Anderson J, Magerl M, Martinez-Saguer I, Davis-Lorton M, Zanichelli A, Li HH, Craig T, Jacobs J, Johnston DT, Shapiro R, Yang WH, Lumry WR, Manning ME, Schwartz LB, Shennak M, Soteres D, Zaragoza-Urdaz RH, Gierer S, Smith AM, Tachdjian R, Wedner HJ, Hebert J, Rehman SM, Staubach P, Schranz J, Baptista J, Nothaft W, Maurer M; HELP Investigators. Effect of Lanadelumab Compared With Placebo on Prevention of Hereditary Angioedema Attacks: A Randomized Clinical Trial. JAMA. 2018 Nov 27;320(20):2108-2121. doi: 10.1001/jama.2018.16773.

    PubMed 30480729

Questions about this trial

What is this clinical trial studying?

A Phase 3 study testing DX-2930 - 300mg/2wk, DX-2930 - 300mg/4wk and DX-2930 - 150mg/4wk in people with Hereditary Angioedema (HAE), run by Shire at 41 sites in 7 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 5 inclusion and 9 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: finished, as of the sponsor's last update on 2 Jun 2021. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 41 sites in United States, Canada, Germany, Italy, Jordan and 2 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 24 Apr 2018). 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?

Rate of Investigator Confirmed Hereditary Angioedema (HAE) Attacks During Treatment Period (time frame: From Day 0 to Day 182). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT02586805, which also lists 4 linked publications.

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 2 Jun 2021.

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