Aimmune to Present New Clinical Data at AAAAI Annual Meeting

Nine Abstracts Will Highlight Data Including on the First FDA-Approved Treatment for Peanut Allergy and Oral Immunotherapy Practice Implementation in a Real-World Setting

BRISBANE, Calif.--()--Aimmune Therapeutics, Inc. (Nasdaq: AIMT), a biopharmaceutical company developing and commercializing treatments for potentially life-threatening food allergies, today announced it will present new data from the clinical trial program for PALFORZIA™ [Peanut (Arachis hypogaea) Allergen Powder-dnfp], the first-ever peanut allergy treatment approved by the U.S. Food and Drug Administration (FDA). Additionally, the Company will present data on other topics, such as important insights into oral immunotherapy (OIT) practice patterns in a real-world setting. These data will be presented at the American Academy of Allergy, Asthma & Immunology (AAAAI) 2020 Annual Meeting, taking place March 13-16, in Philadelphia.

PALFORZIA (previously known as AR101) is an oral immunotherapy indicated for the mitigation of allergic reactions, including anaphylaxis, that may occur with accidental exposure to peanut. PALFORZIA is approved for use in patients with a confirmed diagnosis of peanut allergy. Initial dose escalation may be administered to patients aged 4 through 17 years. Up-dosing and maintenance may be continued in patients 4 years of age and older. PALFORZIA is to be used in conjunction with a peanut-avoidant diet. PALFORZIA is not indicated for the emergency treatment of allergic reactions, including anaphylaxis. PALFORZIA can cause anaphylaxis, which may be life-threatening and can occur at any time during PALFORZIA therapy. Because of the risk of anaphylaxis, PALFORZIA is available only through a restricted program under a Risk Evaluation and Mitigation Strategy (REMS) called the PALFORZIA REMS.

On the heels of the recent FDA approval of PALFORZIA, we are excited to present new clinical data from our studies of this first-of-its-kind treatment,” said Daniel Adelman, M.D., Chief Medical Officer of Aimmune. “Peanut allergy has a profound impact on patients and their families, and we are committed to working with the food allergy community to gather important data that can help further illuminate the burden of this common food allergy and inform research that can lead to treatment options.”

All of the presentations will take place on Sunday, March 15, from 9:45 to 10:45 a.m. EDT, in the Poster Hall of the Pennsylvania Convention Center, 200 Level, Hall D.

Details follow:

PALFORZIA Clinical Trial Data

#423: Siri et al., Improved Tolerability and Continued Immunomodulation Among Subjects Aged 4-17 Years Following 12 or 18 Months of Daily Therapeutic AR101 Dosing

#438: Lanser et al., Effect of Demographics and Baseline Clinical Characteristics on the Treatment Response to AR101: Results From PALISADE

#421: Shreffler et al., Identifying Demographics and Baseline Clinical Characteristics Associated with Safety Outcomes During AR101 Therapy

#432: Ohayon et al., Improvements in Self-Reported Disease-Specific Quality of Life Among Peanut-Allergic Subjects Receiving AR101 for 28 or 56 Weeks Beyond the First Year of Treatment

Peanut Allergy Data

#468: Donelson et al., Peanut Allergy Burden Survey: Comparison of Responses from Adolescents and Caregivers of Adolescents

#466: Nowak-Wegrzyn, et al., Peanut Allergy Burden Survey: Impact of Peanut Allergy on Global Quality of Life in Adolescent Patients

#469: Tilles et al., Peanut Allergy Burden Survey: Correlates of Food Allergy Quality of Life Questionnaire – Teen Form Scores

Real-World OIT Practice Data

#439: Jacobs et al., Oral Immunotherapy for Food Allergy: A Survey of Real-World Practice Patterns and Side Effect Management

#440: Hartman et al., Real-World Epinephrine Use in Oral Immunotherapy-Induced Reactions

INDICATION

PALFORZIA is an oral immunotherapy indicated for the mitigation of allergic reactions, including anaphylaxis, that may occur with accidental exposure to peanut. PALFORZIA is approved for use in patients with a confirmed diagnosis of peanut allergy. Initial Dose Escalation may be administered to patients aged 4 through 17 years. Up-Dosing and Maintenance may be continued in patients 4 years of age and older.

PALFORZIA is to be used in conjunction with a peanut-avoidant diet.

Limitations of Use: Not indicated for the emergency treatment of allergic reactions, including anaphylaxis.

IMPORTANT SAFETY INFORMATION

Boxed WARNING:

PALFORZIA can cause anaphylaxis, which may be life threatening and can occur at any time during PALFORZIA therapy.

Prescribe injectable epinephrine, instruct and train patients on its appropriate use, and instruct patients to seek immediate medical care upon its use.

Do not administer PALFORZIA to patients with uncontrolled asthma.

Dose modifications may be necessary following an anaphylactic reaction.

Observe patients during and after administration of the Initial Dose Escalation and the first dose of each Up-Dosing level, for at least 60 minutes.

PALFORZIA is available only through a restricted program called the PALFORZIA REMS.

CONTRAINDICATIONS

PALFORZIA is contraindicated in patients with uncontrolled asthma, or with a history of eosinophilic esophagitis and other eosinophilic gastrointestinal disease.

WARNINGS AND PRECAUTIONS

Anaphylaxis

PALFORZIA can cause anaphylaxis, which may be life threatening. PALFORZIA is available only through a restricted program under a Risk Evaluation and Mitigation Strategy (REMS) called the PALFORZIA REMS because of the risk of anaphylaxis. Only prescribers, healthcare settings, pharmacies, and patients certified and enrolled in the REMS Program can prescribe, receive, dispense or administer PALFORZIA.

Anaphylaxis has been reported during all phases of PALFORZIA dosing, including Maintenance and in subjects who have undergone recommended Up-Dosing and dose modification procedures.

Do not initiate PALFORZIA treatment in a patient who has had severe or life-threatening anaphylaxis within the previous 60 days. PALFORZIA may not be suitable for patients with certain medical conditions that may reduce the ability to survive anaphylaxis, including but not limited to markedly compromised lung function, severe mast cell disorder, or cardiovascular disease. In addition, PALFORZIA may not be suitable for patients taking medications that can inhibit or potentiate the effects of epinephrine.

All Initial Dose Escalation doses and the first dose of each Up-Dosing level must be administered in a certified health care setting.

Patients may be more likely to experience allergic reactions following PALFORZIA administration in the presence of cofactors such as exercise, hot water exposure, intercurrent illness (e.g., viral infection), or fasting. Other potential cofactors may include menstruation, sleep deprivation, nonsteroidal anti-inflammatory drug use, or uncontrolled asthma. Patients should be proactively counseled about the potential for the increased risk of anaphylaxis in the presence of these cofactors. If possible, adjust the time of dosing to avoid these cofactors. If it is not possible to avoid these cofactors, consider withholding PALFORZIA temporarily.

Asthma

Uncontrolled asthma is a risk factor for a serious outcome, including death, in anaphylaxis. Ensure patients with asthma have their asthma under control prior to initiation of PALFORZIA.

PALFORZIA should be temporarily withheld if the patient is experiencing an acute asthma exacerbation. Following resolution of the exacerbation, resumption of PALFORZIA should be undertaken cautiously. Re-evaluate patients who have recurrent asthma exacerbations and consider discontinuation of PALFORZIA.

Eosinophilic Gastrointestinal Disease

Discontinue PALFORZIA and consider a diagnosis of eosinophilic esophagitis in patients who experience severe or persistent gastrointestinal symptoms, including dysphagia, vomiting, nausea, gastroesophageal reflux, chest pain, or abdominal pain.

Gastrointestinal Adverse Reactions

Gastrointestinal adverse reactions were commonly reported in PALFORZIA-treated subjects, and dose modification should be considered for patients who report these reactions. For severe or persistent gastrointestinal symptoms consider a diagnosis of eosinophilic esophagitis.

ADVERSE REACTIONS

The most common adverse events reported in subjects treated with PALFORZIA (incidence ≥ 5% and ≥ 5% than placebo) are abdominal pain, vomiting, nausea, oral pruritus, oral paresthesia, throat irritation, cough, rhinorrhea, sneezing, throat tightness, wheezing, dyspnea, pruritus, urticaria, anaphylactic reaction, and ear pruritus.

Please see full Prescribing Information, including Boxed WARNING, and Medication Guide at www.PALFORZIA.com.

For more information about PALFORZIA, please call 1-844-PALFORZ (1-844-725-3679) or visit www.PALFORZIA.com.

About Aimmune

Aimmune Therapeutics, Inc. is a biopharmaceutical company that aspires to become the global leader in developing curative therapies and solutions for patients with food allergies. With a mission to improve the lives of people with food allergies, Aimmune is developing and commercializing oral treatments for potentially life-threatening food allergies. The Company’s Characterized Oral Desensitization ImmunoTherapy (CODIT™) approach is intended to provide meaningful levels of protection against allergic reactions resulting from accidental exposure to food allergens by desensitizing patients with defined, precise amounts of key allergens. Aimmune has one FDA-approved medicine for peanut allergy and other investigational therapies in development to treat other food allergies. For more information, please visit www.aimmune.com.

Forward-Looking Statements

Statements contained in this press release regarding matters that are not historical facts are “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Because such statements are subject to risks and uncertainties, actual results may differ materially from those expressed or implied by such forward-looking statements. Such statements include, but are not limited to, statements regarding: Aimmune’s expectations regarding the potential benefits of PALFORZIA; and Aimmune’s expectations regarding potential applications of the CODIT approach to treating life-threatening food allergies. Risks and uncertainties that contribute to the uncertain nature of the forward-looking statements include: the expectation that Aimmune will need additional funds to finance its operations; Aimmune’s dependence on the success of PALFORZIA; Aimmune’s ability to build a commercial field organization and distribution network; the degree of acceptance of PALFORZIA among physicians, patients, healthcare payors, patient advocacy groups and the general medical community; Aimmune’s ability to obtain favorable coverage and reimbursement from third-party payors for PALFORZIA; Aimmune’s reliance on third parties for the manufacture of PALFORZIA; Aimmune’s ability to implement and comply with the REMS for PALFORZIA; possible regulatory developments in the United States and foreign countries; and Aimmune’s ability to attract and retain senior management personnel. These and other risks and uncertainties are described more fully in Aimmune's most recent filings with the Securities and Exchange Commission, including its Quarterly Report on Form 10-Q for the quarter ended September 30, 2019. All forward-looking statements contained in this press release speak only as of the date on which they were made. Aimmune undertakes no obligation to update such statements to reflect events that occur or circumstances that exist after the date on which they were made.

This press release concerns PALFORZIA (AR101), which has been approved for marketing by the FDA in the United States and has not been approved for marketing by the EMA or Swissmedic. AR101 in Europe is currently limited to investigational use, and no representation is made as to its safety or effectiveness for the purposes for which it is being investigated.

PALFORZIA™, AIMMUNE™, AIMMUNE THERAPEUTICS™ and CODIT™ are trademarks of Aimmune Therapeutics, Inc.

Contacts

Investors:
DeDe Sheel
(917) 834-1494
dsheel@aimmune.com

Media:
Julie Normart
(559) 947-3245
jnormart@w2ogroup.com

Lauren Barbiero
(646) 564-2156
lbarbiero@w2ogroup.com

Release Summary

Aimmune to Present New Clinical Data at AAAAI Annual Meeting

Contacts

Investors:
DeDe Sheel
(917) 834-1494
dsheel@aimmune.com

Media:
Julie Normart
(559) 947-3245
jnormart@w2ogroup.com

Lauren Barbiero
(646) 564-2156
lbarbiero@w2ogroup.com