Biohaven Achieves Positive Topline Results in Pivotal Phase 2/3 Study of Vazegepant, The First and Only Intranasal CGRP Receptor Antagonist in Clinical Development for the Acute Treatment of Migraine

NEW HAVEN, Conn., Dec. 17, 2019 /PRNewswire/ -- Biohaven Pharmaceutical Holding Company Ltd. (NYSE: BHVN) today announced positive topline results from its randomized, dose ranging, placebo controlled, pivotal Phase 2/3 clinical trial (BHV3500-201; NCT03872453) evaluating the efficacy and tolerability of intranasal vazegepant 5, 10 and 20 mg versus placebo in 1,673 patients for the acute treatment of migraine. Vazegepant 10 and 20 mg was statistically superior to placebo on the co-primary endpoints of pain freedom and freedom from most bothersome symptom (MBS, photophobia, phonophobia or nausea) at 2 hours using a single dose (Table 1). The benefits of vazegepant were durable and sustained without rescue medication through 48 hours (nominal p < 0.05), including: sustained pain freedom 2 to 24 hours (5, 10 and 20 mg); sustained pain freedom 2 to 48 hours (5, 10 and 20 mg); sustained pain relief 2 to 24 hours (5, 10 and 20 mg); and sustained pain relief 2 to 48 hours (5 and 10 mg). Additional results from this study are anticipated to be presented at upcoming scientific meetings in 2020.

Table 1: Vazegepant Met Co-Primary Endpoints of Pain Freedom & Freedom from Most Bothersome Symptom

Richard B. Lipton, M.D., Professor and Vice Chair of Neurology, and Director of the Montefiore Headache Center, at the Albert Einstein College of Medicine commented, "A large number of patients need a non-oral, acute migraine treatment option, particularly those with prominent nausea, vomiting or gastroparesis. Most of my patients don't like needles. Vazegepant is the first CGRP receptor antagonist delivered in an intranasal formulation, a benefit for patients who need non-oral therapy. This dose ranging study unequivocally demonstrates the benefits of vazegepant in the acute treatment of migraine."

Vazegepant was also superior to placebo on multiple secondary endpoints demonstrating early activity (nominal p < 0.05).  Vazegepant had rapid onset with pain relief at 15 minutes (10 and 20mg), and  return to normal function as early as 30 minutes (20mg).  The 10 and 20 mg vazegepant doses showed therapeutic benefits on both pain relief and return to normal function at 2 hours.

 Intranasal vazegepant was well tolerated in this single dose trial.  Individual adverse events (AEs) greater than 5% were:  dysgeusia (13.5 to 16.1% in the vazegepant arms, and 3.5% in the placebo arm) and nasal discomfort (1.3 to 5.2% in the vazegepant arms, and 0.2% in the placebo arm). The majority (> 80%) of AEs were mild in intensity. There was no signal of hepatoxicity as no subjects had AST or ALT > 3x ULN, or total bilirubin > 2x ULN, in any treatment arm (Table 2).

Table 2: Liver Function Test (LFT) Profile

Vlad Coric, M.D., Chief Executive Officer of Biohaven, stated, "Biohaven has now advanced yet another CGRP signal-targeting product into the clinic highlighting the value of our migraine platform and the capability of the organization to develop products that meet patients' needs. This shows our ability to execute on clinical trials, now delivering our 4^th consecutive positive pivotal trial in migraine."  Dr. Coric added, "We are excited to demonstrate the efficacy and tolerability of the first intranasal CGRP receptor antagonist for patients with migraine. These positive results, in a large, multiple arm phase 2/3 dose finding trial, may allow us to accelerate this program with only one additional positive efficacy trial likely needed for submission.  Biohaven is grateful to the patients and investigators who have contributed to the success of the vazegepant and rimegepant programs."

Vazegepant is the newest member of Biohaven's NOJECTION^TM Migraine Platform to have demonstrated efficacy in a pivotal trial. The lead product rimegepant Zydis™ ODT is under FDA review with a first quarter 2020 PDUFA date. Biohaven believes that intranasal vazegepant will be complementary to other CGRP targeting agents, including Biohaven's rimegepant.

About Migraine

Over 36 million Americans suffer from migraine. Migraine attacks can differ in intensity and frequency, with many being highly disabling. More than 90 percent of migraine sufferers are unable to work or function normally during an attack. In the Global Burden of Disease Study, updated in 2015, migraine was ranked as the seventh highest cause worldwide of years lost due to disability. CGRP receptor antagonists represent a novel class of drug candidates for the treatment of migraine and are the first new class specific to the acute treatment of migraine in over 25 years. This unique and specific mode of action potentially offers an alternative to current agents, particularly for patients who have contraindications to the use of triptans, such as those with underlying cardiovascular diseases, or who either do not respond or have inadequate or inconsistent response to triptans or are intolerant to them.

About Biohaven

Biohaven is a clinical-stage biopharmaceutical company with a portfolio of innovative, late-stage product candidates targeting neurological diseases, including rare disorders. Biohaven has combined internal development and research with intellectual property licensed from companies and institutions including Bristol-Myers Squibb Company, AstraZeneca AB, Yale University, Catalent, Rutgers, ALS Biopharma LLC. Currently, Biohaven's lead development programs include multiple compounds across its CGRP receptor antagonist, glutamate modulation, and myeloperoxidase inhibitor platforms. Biohaven's common shares are listed on the New York Stock Exchange and traded under the ticker symbol BHVN. More information about Biohaven is available at www.biohavenpharma.com

About Aptar Pharma

Aptar Pharma is part of AptarGroup, Inc., a leading global supplier of a broad range of innovative dispensing, sealing and active packaging solutions for the beauty, personal care, home care, prescription drug, consumer health care, injectables, food and beverage markets. Aptar uses insights, design, engineering and science to create innovative packaging technologies that build brand value for its customers, and, in turn, make a meaningful difference in the lives, looks, health and homes of people around the world. Aptar is headquartered in Crystal Lake, Illinois and has over 14,000 dedicated employees in 18 different countries. For more information, visit www.aptar.com/pharma. Media Contact: Carolyn Penot, Aptar Pharma, +33 1 39 17 20 38, [email protected]

Forward-Looking Statements

This news release includes forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. These forward-looking statements involve substantial risks and uncertainties, including statements that are based on the current expectations and assumptions of the Company's management. All statements, other than statements of historical facts, included in this press release, including statements about the potential safety, efficacy and attractive mode of administration of vazegepant as a treatment for migraine, as well as its potential for rapid onset and sustained activity, the potential of the Company's CGRP receptor antagonist drug candidates to provide an improved, effective and safe treatment option for the acute and preventive treatment of migraine and the Company's expected timelines for receipt of data from clinical trials, are forward-looking statements. The use of certain words, including "believe," "potential" and "will" and similar expressions, is intended to identify forward-looking statements. The Company may not actually achieve the plans and objectives disclosed in the forward-looking statements, and you should not place undue reliance on the Company's forward-looking statements. Various important factors could cause actual results or events to differ materially from those that may be expressed or implied by our forward-looking statements, including that topline data is based on preliminary analysis of key efficacy and safety data, and such data could change following a more comprehensive review and evaluation of more extensive data from the trials that the Company has not yet received, and these preliminary conclusions may not accurately reflect the complete results of the clinical trials, and uncertainties relating to the timing for submitting an NDA and the potential regulatory approval of vazegepant. Additional important factors to be considered in connection with forward-looking statements are described in the "Risk Factors" section of the Company's Annual Report on Form 10-K filed with the Securities and Exchange Commission, as updated by the Company's subsequent Quarterly Report on Form 10-Q for the quarter ended September 30, 2019, filed with the Securities and Exchange Commission on November 1, 2019. The forward-looking statements are made as of this date and the Company does not undertake any obligation to update any forward-looking statements, whether as a result of new information, future events or otherwise, except as required by law.

Biohaven Contact
Dr. Vlad Coric
Chief Executive Officer
[email protected]

SOURCE Biohaven Pharmaceutical Holding Company Ltd.

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