Takeda’s TAKHZYRO® (lanadelumab) Open Label Phase 3 Study Met Its Objectives in Children Ages 2 to <12 Years of Age With Hereditary Angioedema (HAE)

• SHP643-301 is A Multicenter, Open-Label Phase 3 Study to Evaluate Safety, PK, Pharmacodynamics, And Clinical Activity/Outcomes of TAKHZYRO for Prevention Against Acute Attacks of HAE in Pediatric Patients 2 To <12 Years of Age

• Safety Profile Was Consistent With That Seen in the Clinical Program for Patients 12 Years and Older; There Were No Serious Adverse Events

• Global Regulatory Filing for Children Ages 2 to <12 Years of Age Planned to Begin this Fiscal Year

(BUSINESS WIRE) -- Takeda (TSE:4502/NYSE:TAK) today announced that the Phase 3 SHP643-301 study (NCT04070326) evaluating the safety profile and pharmacokinetics (PK) of TAKHZYRO^® (lanadelumab) in patients 2 to <12 years of age is complete and has met its objectives. The safety profile was consistent with that seen in the clinical program for patients 12 years of age and older; there were no serious adverse events and no dropouts due to adverse events.¹

The study also successfully reached the secondary objective evaluating the clinical activity/outcome of TAKHZYRO in preventing hereditary angioedema (HAE) attacks as well as characterizing the pharmacodynamics of TAKHZYRO in pediatric subjects 2 to <12 years of age.

“We are encouraged by these results, as each objective met instills further confidence in the potential to bring a treatment option to this vulnerable population,” said Ashley Yegin, Global Medical Unit Head, HAE, Global Medical Affairs, Takeda. “With more than a decade of experience and innovation in HAE, Takeda is committed to continued support for patients of all ages with this devastating condition.”

“I’m pleased that TAKHZYRO has met these key objectives and I look forward to Takeda sharing further insights with the HAE community in the near future,” said Dr. Marcus Maurer, Professor of Dermatology and Allergy Charité – Universitätsmedizin Berlin, Germany and principal investigator of SHP643-301.

SHP643-301, also known as the SPRING study, is a multicenter, open-label Phase 3 study to evaluate the safety, PK and PD of TAKHZYRO for prevention against acute attacks of HAE in pediatric patients 2 to <12 years of age. Participants aged 2 to < 6 years received lanadelumab at a dose of 150 milligrams (mg) every 4 weeks (q4wks) over 52-week treatment period. Participants aged 6 to <12 years received lanadelumab at a dose of 150 mg every 2 weeks (q2wks) over 52-week treatment period. This study is complete, and full results will be presented at upcoming medical meeting(s).¹

We look forward to discussing these data with global health authorities.

About TAKHZYRO^® (lanadelumab-flyo) Injection
TAKHZYRO is a fully human monoclonal antibody that specifically binds and decreases plasma kallikrein and is indicated for routine prevention of recurrent attacks of HAE in patients aged 12 years and older. It was studied in one of the largest prevention studies in HAE with the longest active treatment duration, and TAKHZYRO consistently demonstrated HAE attack reduction. TAKHZYRO is formulated for subcutaneous administration and has a half-life of approximately two weeks. TAKHZYRO is intended for self-administration or administration by a caregiver once trained by a healthcare professional.²

TAKHZYRO Safety Information for Europe
Please consult the TAKHZYRO Summary Product Characteristics (SmPC) before prescribing.

TAKHZYRO treatment should be initiated under the supervision of a physician experienced in the management of patients with hereditary angioedema (HAE). TAKHZYRO may be self-administered or administered by a caregiver only after training on SC injection technique by a healthcare professional.³

Contraindication
Hypersensitivity to the active substance or to any of the excipients.³

Warnings and Precautions
Traceability: In order to improve the traceability of biological medicinal products, the name and the batch number of the administered product should be clearly recorded.³

Hypersensitivity reactions have been observed. In case of a severe hypersensitivity reaction, administration of TAKHZYRO must be stopped immediately and appropriate treatment must be initiated.³

General: TAKHZYRO is not intended for treatment of acute HAE attacks. In case of a breakthrough HAE attack, individualized treatment should be initiated with an approved rescue medication. There are no available clinical data on the use of lanadelumab in HAE patients with normal C1-INH activity.³

Interference with coagulation test: Lanadelumab can increase activated partial thromboplastin time (aPTT) due to an interaction of lanadelumab with the aPTT assay. The reagents used in the aPTT laboratory test initiate intrinsic coagulation through the activation of plasma kallikrein in the contact system. Inhibition of plasma kallikrein by lanadelumab can increase aPTT in this assay. None of the increases in aPTT in patients treated with TAKHZYRO were associated with abnormal bleeding adverse events. There were no differences in international normalised ratio (INR) between treatment groups.³

Sodium content: This medicinal product contains less than 1 mmol sodium (23 mg) per vial, that is to say essentially 'sodium-free'.³

Interactions
No dedicated drug-drug interaction studies have been conducted. Based on the characteristics of lanadelumab, no pharmacokinetic interactions with co-administered medicinal products is expected.³

As expected, concomitant use of the rescue medication C1 esterase inhibitor results in an additive effect on lanadelumab-cHMWK response based on the mechanism of action (MOA) of lanadelumab and C1 esterase inhibitor.³

Immunogenicity
Treatment with lanadelumab has been associated with development of treatment emergent anti-drug antibodies (ADA) in 11.9% (10/84) of subjects. All antibody titres were low. The ADA response was transient in 20% (2/10) of ADA positive subjects. 2.4% (2/84) of lanadelumab-treated subjects tested positive for neutralizing antibodies.³

The development of ADA including neutralising antibodies against TAKHZYRO did not appear to adversely affect the pharmacokinetic (PK) and pharmacodynamics (PD) profiles or clinical response.³

Immunogenicity
The most commonly observed adverse reaction (52.4%) associated with TAKHZYRO was injection site reactions (ISR) including injection site pain, injection site erythema and injection site bruising. Of these ISRs, 97% were of mild intensity, 90% resolved within 1 day after onset with a median duration of 6 minutes.³

Hypersensitivity reaction (mild and moderate pruritus, discomfort and tingling of tongue) was observed (1.2%)

*Injection site reactions include: pain, erythema, bruising, discomfort, haematoma, haemorrhage, pruritus, swelling, induration, paraesthesia, reaction, warmth, oedema and rash.
** Hypersensitivity includes: pruritus, discomfort and tingling of tongue.

For European Union Summary of Product Characteristics, please visit https://www.ema.europa.eu/en/documents/product-information/takhzyro-epar-product-information_en.pdf.

For full U.S. Prescribing Information, including the approved indication and important safety information, please visit https://www.shirecontent.com/PI/PDFs/TAKHZYRO_USA_ENG.pdf.

About Hereditary Angioedema
Hereditary angioedema (HAE) is a rare genetic disorder that results in recurring attacks of oedema – swelling – in various parts of the body, including the abdomen, face, feet, genitals, hands and throat. The swelling can be debilitating and painful.^4,5,6 Attacks that obstruct the airways can cause asphyxiation and are potentially life threatening.^6,7 HAE affects an estimated 1 in 50,000 people worldwide. It is often under recognized, under diagnosed and under treated. ^4,7

Takeda in Hereditary Angioedema
Hereditary Angioedema (HAE), like so many other rare diseases, is highly complex, and patients, their families and caregivers often undergo years of strain trying to understand their disease, get a definitive diagnosis and gain access to the medicines they need. At Takeda we are a committed champion for the patients we serve. Every individual living with HAE is unique and by listening and reacting to their needs, we translate the insights we gain into innovative solutions – from diagnosis to ongoing management. Advancing the science is crucial to the way we operate and we are bold in our mission to accelerate diagnosis and develop treatments that will make a difference to the lives of HAE patients, their support networks and those medical professionals who care for them.

About Takeda
Takeda is a global, values-based, R&D-driven biopharmaceutical leader headquartered in Japan, committed to discover and deliver life-transforming treatments, guided by our commitment to patients, our people and the planet. Takeda focuses its R&D efforts on four therapeutic areas: Oncology, Rare Genetics and Hematology, Neuroscience, and Gastroenterology (GI). We also make targeted R&D investments in Plasma-Derived Therapies and Vaccines. We are focusing on developing highly innovative medicines that contribute to making a difference in people’s lives by advancing the frontier of new treatment options and leveraging our enhanced collaborative R&D engine and capabilities to create a robust, modality-diverse pipeline. Our employees are committed to improving quality of life for patients and to working with our partners in health care in approximately 80 countries and regions. For more information, visit https://www.takeda.com.

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References

¹Takeda DOF. SHP643-303 Topline Results. February 2022.

²TAKHZYRO^® (lanadelumab-flyo) injection Prescribing Information.

³TAKHZYRO^® (lanadelumab) European Summary of Product Characteristics

⁴Cicardi M, Bork K, Caballero T, et al; on behalf of HAWK (Hereditary Angioedema International Working Group). Evidence-based recommendations for the therapeutic management of angioedema owing to hereditary C1 inhibitor deficiency: consensus report of an International Working Group. Allergy. 2012; 67(2):147-157.

⁵Zuraw BL. Hereditary angioedema. N Engl J Med. 2008;359(10):1027-1036.

⁶Banerji A. The burden of illness in patients with hereditary angioedema. Ann Allergy Asthma Immunol. 2013;111(5):329-336.

⁷Longhurst HJ, Bork K. Hereditary angioedema: causes, manifestations, and treatment. Br J Hosp Med. 2006;67(12):654-657.

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