Emicizumab for Hemophilia A

(HAVEN 6 Trial)

Recruiting at 36 trial locations

Overseen By Reference Study ID Number: BO41423 www.roche.com/about_roche/roche_worldwide.htm

Age: Any Age

Sex: Any

Trial Phase: Phase 3

Sponsor: Hoffmann-La Roche

Must not be taking: Thromboembolic treatments

Disqualifiers: Other bleeding disorders, HIV, others

No Placebo Group All trial participants will receive the active study treatment (no placebo)

Pivotal Trial (Near Approval) This treatment is in the last trial phase before FDA approval

Prior Safety Data This treatment has passed at least one previous human trial

Approved in 2 Jurisdictions This treatment is already approved in other countries

Compensation: Varies

Number of Visits: Unknown

Duration: 52 weeks

73 Participants Needed

Trial Summary

Will I have to stop taking my current medications?

The trial information does not specify if you need to stop taking your current medications. However, if you are on any investigational drugs or treatments for hemophilia, you may need to stop them before joining the trial. It's best to discuss your specific medications with the trial team.

What data supports the effectiveness of the drug Emicizumab for Hemophilia A?

Research shows that Emicizumab is effective in improving blood clotting in people with Hemophilia A by mimicking the function of a missing protein, leading to better outcomes in both those with and without inhibitors. ^{1 2 3 4 5}

Is emicizumab safe for humans?

Emicizumab has been shown to be safe in humans, with its safety proven in multiple clinical trials for patients with hemophilia A, including those with and without inhibitors. Long-term studies have also supported its safety over several years of use. ^{1 2 4 6 7}

How is the drug Emicizumab different from other treatments for Hemophilia A?

Emicizumab is unique because it is a bispecific antibody that mimics the function of missing factor VIII by bridging activated factor IX and factor X, helping to prevent bleeding in Hemophilia A patients. Unlike traditional treatments that require intravenous infusions, Emicizumab is administered subcutaneously (under the skin), making it more convenient for patients. ^{1 2 8 9 10}

What is the purpose of this trial?

This trial tests emicizumab, a medication that helps blood clot, in people with mild or moderate hemophilia A. It works by mimicking a missing protein to improve blood clotting. Emicizumab has been approved for treatment of hemophilia A patients.

Research Team

Clinical Trials

Principal Investigator

Hoffmann-La Roche

Eligibility Criteria

This trial is for individuals with mild or moderate Hemophilia A without inhibitors to factor VIII. Participants must weigh at least 3 kg, need prophylaxis, have documented treatment and bleeding episodes history, and proper organ function. Women of childbearing age should agree to use contraception.

Inclusion Criteria

I have mild or moderate Hemophilia A without inhibitors.

Need for prophylaxis based on investigator assessment

I weigh at least 3 kilograms.

Exclusion Criteria

Inability to comply with the study protocol in the opinion of the investigator

Pregnant or breastfeeding, or intending to become pregnant during the study (women of childbearing potential must have a negative serum pregnancy test result within 7 days prior to initiation of study drug)

I am not planning any surgery during the initial phase of my emicizumab treatment.

Timeline

Screening

Participants are screened for eligibility to participate in the trial

2-4 weeks

Treatment

Participants receive emicizumab with a loading dose regimen followed by one of three maintenance dose regimens

52 weeks

Follow-up

Participants are monitored for safety and effectiveness after treatment

4 weeks

Long-term follow-up

Participants continue to be monitored for long-term safety and efficacy outcomes

up to approximately 48 months

Treatment Details

Interventions

• Emicizumab

Trial Overview The study tests Emicizumab's safety, effectiveness, how the body processes it (pharmacokinetics), and its impact on the body (pharmacodynamics) in those with mild/moderate Hemophilia A who don't have FVIII inhibitors.

Participant Groups

Group I: Emicizumab Experimental Treatment 1 Intervention

Participants with mild and moderate hemophilia A without factor VIII (FVIII) inhibitors will be enrolled to receive the emicizumab loading dose regimen followed by the participant's preference of one of 3 maintenance dose regimens.

Emicizumab is already approved in United States, European Union for the following indications:

Approved in United States as Hemlibra for:

• Hemophilia A
• Hemophilia A with inhibitors

Approved in European Union as Hemlibra for:

• Hemophilia A
• Hemophilia A with inhibitors

Who Is Running the Clinical Trial?

Hoffmann-La Roche

Lead Sponsor

Trials

2,482

Recruited

1,107,000+

Headquarters

Basel, Switzerland

Known For

Precision medicine

Top Products

Avastin, Herceptin, Rituxan, Accu-Chek

Dr. Levi Garraway

Hoffmann-La Roche

Chief Medical Officer since 2019

MD from the University of Basel

Dr. Thomas Schinecker

Hoffmann-La Roche

Chief Executive Officer since 2023

PhD in Molecular Biology from New York University

Findings from Research

Emicizumab significantly shortened the activated partial thromboplastin time (APTT) in patients with severe hemophilia A after the first dose, indicating its effectiveness in improving blood clotting.

The standard one-stage APTT-based FVIII activity assay (sOSA) produced inaccurately high FVIII activity levels when using emicizumab, suggesting it should not be used for monitoring, while modified OSA (mOSA) effectively quantified emicizumab concentration.

NCBI (Pubmed)

pubmed.ncbi.nlm.nih.gov

Effects of emicizumab on APTT, one-stage and chromogenic assays of factor VIII in artificially spiked plasma and in samples from haemophilia A patients with inhibitors. Bowyer, A., Kitchen, S., Maclean, R.[2020]

In a phase 3 trial with 152 participants, emicizumab significantly reduced the annualized bleeding rate in hemophilia A patients without factor VIII inhibitors, showing a 96% reduction compared to no prophylaxis.

Emicizumab was well-tolerated, with the most common side effect being low-grade injection-site reactions, and it did not lead to serious complications like thrombotic events or the development of factor VIII inhibitors.

NCBI (Pubmed)

pubmed.ncbi.nlm.nih.gov

Emicizumab Prophylaxis in Patients Who Have Hemophilia A without Inhibitors. Mahlangu, J., Oldenburg, J., Paz-Priel, I., et al.[2022]

Emicizumab is an effective treatment for hemophilia A, significantly reducing bleeding events compared to on-demand treatment and traditional factor VIII prophylaxis, making it a valuable alternative for patients.

The safety profile of emicizumab is generally excellent, with only a few reported cases of thrombotic events, indicating it is a well-tolerated option for managing hemophilia A.

NCBI (Pubmed)

pubmed.ncbi.nlm.nih.gov

Safety evaluation of emicizumab prophylaxis in individuals with haemophilia A. Wang, CP., Young, G., Thornburg, CD.[2022]

Emicizumab is safe and effective in preventing bleeding in very young children with hemophilia A, as shown in a study of 11 children with a median age of 26 months followed for 36 weeks, where none experienced spontaneous bleeds.

While emicizumab was sufficient for most patients to maintain hemostasis, caution is advised during surgeries, as some procedures may still require additional treatment to prevent bleeding.

NCBI (Pubmed)

pubmed.ncbi.nlm.nih.gov

Emicizumab prophylaxis among infants and toddlers with severe hemophilia A and inhibitors-a single-center cohort. Barg, AA., Avishai, E., Budnik, I., et al.[2020]

In the Phase 3b STASEY study involving 195 participants with hemophilia A, emicizumab prophylaxis demonstrated a favorable safety profile, with no new safety signals identified and only 3.6% of participants discontinuing treatment due to adverse events.

Emicizumab significantly reduced bleeding episodes, with 82.6% of participants experiencing zero treated bleeds over a median exposure of 103.1 weeks, indicating its efficacy in restoring hemostasis in patients with FVIII inhibitors.

NCBI (Pubmed)

pubmed.ncbi.nlm.nih.gov

Safety and efficacy of long-term emicizumab prophylaxis in hemophilia A with factor VIII inhibitors: A phase 3b, multicenter, single-arm study (STASEY). Jiménez-Yuste, V., Peyvandi, F., Klamroth, R., et al.[2023]

In a study of 17 elderly patients with Haemophilia A, emicizumab was found to be well tolerated and significantly reduced the annualized bleeding rate, indicating its efficacy in this population.

No serious adverse events like thrombosis or thrombotic microangiopathy were reported, suggesting that emicizumab is a safe option for elderly patients, even those with cardiovascular risk factors.

NCBI (Pubmed)

pubmed.ncbi.nlm.nih.gov

Emicizumab prophylaxis in haemophilia patients older than 50 years with cardiovascular risk factors: Real-world data. Misgav, M., Brutman-Barazani, T., Budnik, I., et al.[2021]

Emicizumab, administered weekly for up to 5.8 years, was found to be safe with most adverse events being mild and unrelated to the treatment, indicating a favorable safety profile for patients with severe hemophilia A.

The treatment significantly reduced annualized bleeding rates (ABRs) and improved patients' perceptions of bleeding severity and their overall quality of life, with most patients reporting improvements in daily life and reduced anxiety.

NCBI (Pubmed)

pubmed.ncbi.nlm.nih.gov

Long-term safety and efficacy of emicizumab for up to 5.8 years and patients' perceptions of symptoms and daily life: A phase 1/2 study in patients with severe haemophilia A. Shima, M., Nagao, A., Taki, M., et al.[2021]

Emicizumab-kxwh (Hemlibra®) is a bispecific monoclonal antibody that effectively restores the function of missing activated FVIII in patients with hemophilia A, facilitating better blood clotting.

It is approved in the USA for routine prophylaxis to prevent bleeding episodes in hemophilia A patients with FVIII inhibitors, and is currently undergoing phase 3 trials for those without FVIII inhibitors, indicating its potential broad application in hemophilia treatment.

NCBI (Pubmed)

pubmed.ncbi.nlm.nih.gov

Emicizumab-kxwh: First Global Approval. Scott, LJ., Kim, ES.[2019]

In a case study of an adult hemophilia A patient with FVIII inhibitors, the efficacy of emicizumab decreased due to the development of anti-drug antibodies (ADAs) that neutralized its activity, leading to repeated bleeding events.

The study found that the concentration of emicizumab in the patient's plasma decreased over time, and the presence of ADAs was linked to accelerated clearance of the drug, which ultimately reduced its effectiveness in managing bleeding.

NCBI (Pubmed)

pubmed.ncbi.nlm.nih.gov

Detailed analysis of anti-emicizumab antibody decreasing drug efficacy, using plasma samples from a patient with hemophilia A. Kaneda, M., Kawasaki, R., Matsumoto, N., et al.[2023]

In a multicenter study of 93 patients with hemophilia A, the annualized bleeding rates significantly decreased from 4.4 (with inhibitors) and 1.6 (without inhibitors) to just 0.4 after starting treatment with emicizumab, indicating its strong efficacy in preventing bleeding.

The study found no serious drug-related adverse events, thrombotic events, or deaths, highlighting the safety of emicizumab, especially in the largest cohort of children under 12 years without inhibitors treated to date.

NCBI (Pubmed)

pubmed.ncbi.nlm.nih.gov

Real-world use of emicizumab in patients with haemophilia A: Bleeding outcomes and surgical procedures. McCary, I., Guelcher, C., Kuhn, J., et al.[2021]

References

1. England pubmed.ncbi.nlm.nih.gov

Effects of emicizumab on APTT, one-stage and chromogenic assays of factor VIII in artificially spiked plasma and in samples from haemophilia A patients with inhibitors. [2020]

2. United States pubmed.ncbi.nlm.nih.gov

Emicizumab Prophylaxis in Patients Who Have Hemophilia A without Inhibitors. [2022]

3. England pubmed.ncbi.nlm.nih.gov

Safety evaluation of emicizumab prophylaxis in individuals with haemophilia A. [2022]

4. United States pubmed.ncbi.nlm.nih.gov

Emicizumab prophylaxis among infants and toddlers with severe hemophilia A and inhibitors-a single-center cohort. [2020]

5. United States pubmed.ncbi.nlm.nih.gov

Safety and efficacy of long-term emicizumab prophylaxis in hemophilia A with factor VIII inhibitors: A phase 3b, multicenter, single-arm study (STASEY). [2023]

6. England pubmed.ncbi.nlm.nih.gov

Emicizumab prophylaxis in haemophilia patients older than 50 years with cardiovascular risk factors: Real-world data. [2021]

7. England pubmed.ncbi.nlm.nih.gov

Long-term safety and efficacy of emicizumab for up to 5.8 years and patients' perceptions of symptoms and daily life: A phase 1/2 study in patients with severe haemophilia A. [2021]

8. New Zealand pubmed.ncbi.nlm.nih.gov

Emicizumab-kxwh: First Global Approval. [2019]

9. England pubmed.ncbi.nlm.nih.gov

Detailed analysis of anti-emicizumab antibody decreasing drug efficacy, using plasma samples from a patient with hemophilia A. [2023]

10. England pubmed.ncbi.nlm.nih.gov

Real-world use of emicizumab in patients with haemophilia A: Bleeding outcomes and surgical procedures. [2021]