Apellis Announces Seven Abstracts in PNH to be Presented at the European Hematology Association Congress

• Accepted abstracts include an oral presentation highlighting quality of life improvements with EMPAVELI® (pegcetacoplan)

WALTHAM, Mass., May 12, 2022 (GLOBE NEWSWIRE) — Apellis Pharmaceuticals, Inc. (Nasdaq: APLS), a global biopharmaceutical company and leader in complement, today announced that seven abstracts will be presented at the hybrid European Hematology Association (EHA) Congress to be held June 9-12 in Vienna, Austria. Data to be presented reinforce the robust efficacy and safety profile of EMPAVELI® (pegcetacoplan) for the treatment of paroxysmal nocturnal hemoglobinuria (PNH).

“Our presence at EHA this year continues to underscore the potential of EMPAVELI to become the new standard of care for all adults living with PNH,” said Federico Grossi, M.D., Ph.D., chief medical officer of Apellis.

Oral Presentation:

• Effect of Pegcetacoplan on Quality of Life in Complement-Inhibitor Naïve Patients with Paroxysmal Nocturnal Hemoglobinuria: Results from the Phase 3 PRINCE Study – #S303 – Saturday, June 11 – 11:30-12:45 CEST

Poster Presentations:

• Patients with Paroxysmal Nocturnal Hemoglobinuria Treated with Pegcetacoplan Show Improvements in D-dimer Normalization and Decrease in Incidence of Thrombosis – #P839 -Friday, June 10 – 16:30-17:45 CEST

• A Matching-Adjusted Indirect Comparison of the Efficacy of Pegcetacoplan Using PRINCE Trial Data Versus Ravulizumab and Eculizumab in Complement-Naïve Patients with Paroxysmal Nocturnal Hemoglobinuria – #P840 – Friday, June 10 – 16:30-17:45 CEST
• Normalization of Hematologic and Health-Related Quality of Life Markers in Patients with Paroxysmal Nocturnal Hemoglobinuria Treated with Pegcetacoplan and Baseline Hemoglobin at or above 10 g/dL – #P828 – Friday, June 10 – 16:30-17:45 CEST
• Pegcetacoplan Rapidly Stabilizes Complement Inhibitor Naïve Patients with Paroxysmal Nocturnal Hemoglobinuria Experiencing Hemolysis with Acute Hemoglobin Decreases; PRINCE Trial Post Hoc Analysis – #P838 – Friday, June 10 – 16:30-17:45 CEST
• Categorizing Hematological Response to Pegcetacoplan in Patients with Paroxysmal Nocturnal Hemoglobinuria: A Post Hoc Analysis of the Phase 3 PRINCE Study Data – #P833 – Friday, June 10 – 16:30-17:45 CEST
• A Real-World Analysis of Healthcare Resource Utilization Among Patients with Paroxysmal Nocturnal Hemoglobinuria Who Received Treatment with Ravulizumab – #P1747 – Friday, June 10 – 16:30-17:45 CEST

About EMPAVELI®/Aspaveli® (pegcetacoplan)
EMPAVELI®/Aspaveli® (pegcetacoplan) is a targeted C3 therapy designed to regulate excessive activation of the complement cascade, part of the body’s immune system, which can lead to the onset and progression of many serious diseases. EMPAVELI is approved for the treatment of paroxysmal nocturnal hemoglobinuria (PNH) in the United States, Australia, and Saudi Arabia, and Aspaveli, which is the European trade name for pegcetacoplan, is approved in the European Union and the United Kingdom. The therapy is also under investigation for several other rare diseases across hematology, nephrology, and neurology.

U.S. Important Safety Information for EMPAVELI

BOXED WARNING: SERIOUS INFECTIONS CAUSED BY ENCAPSULATED BACTERIA

• Meningococcal infections may occur in patients treated with EMPAVELI and may become rapidly life-threatening or fatal if not recognized and treated early. Use of EMPAVELI may predispose individuals to serious infections, especially those caused by encapsulated bacteria, such as Streptococcus pneumoniae, Neisseria meningitidis types A, C, W, Y, and B, and Haemophilus influenzae type B.
• Comply with the most current Advisory Committee on Immunization Practices (ACIP) recommendations for vaccinations against encapsulated bacteria.
• Vaccinate patients at least 2 weeks prior to administering the first dose of EMPAVELI unless the risks of delaying therapy with EMPAVELI outweigh the risk of developing a serious infection.
• Vaccination reduces, but does not eliminate, the risk of serious infections. Monitor patients for early signs of serious infections and evaluate immediately if infection is suspected.
• EMPAVELI is available only through a restricted program under a Risk Evaluation and Mitigation Strategy (REMS). Under the EMPAVELI REMS, prescribers must enroll in the program.

CONTRAINDICATIONS

• Hypersensitivity to pegcetacoplan or to any of the excipients
• Not currently vaccinated against certain encapsulated bacteria, unless the risks of delaying EMPAVELI treatment outweigh the risks of developing a bacterial infection with an encapsulated organism
• Unresolved serious infection caused by encapsulated bacteria including Streptococcus pneumoniae, Neisseria meningitidis, and Haemophilus influenzae

WARNINGS AND PRECAUTIONS

Serious Infections Caused by Encapsulated Bacteria
The use of EMPAVELI may predispose individuals to serious, life-threatening, or fatal infections caused by encapsulated bacteria, including Streptococcus pneumoniae, Neisseria meningitidis types A, C, W, Y, and B, and Haemophilus influenzae type B (Hib). To reduce the risk of infection, all patients must be vaccinated against these bacteria according to the most current ACIP recommendations for patients with altered immunocompetence associated with complement deficiencies. Revaccinate patients in accordance with ACIP recommendations considering the duration of therapy with EMPAVELI.

For patients without known history of vaccination, administer required vaccines at least 2 weeks prior to receiving the first dose of EMPAVELI. If immediate therapy with EMPAVELI is indicated, administer required vaccine as soon as possible and provide patients with 2 weeks of antibacterial drug prophylaxis.

Closely monitor patients for early signs and symptoms of serious infection and evaluate patients immediately if an infection is suspected. Promptly treat known infections. Serious infection may become rapidly life-threatening or fatal if not recognized and treated early. Consider discontinuation of EMPAVELI in patients who are undergoing treatment for serious infections.

EMPAVELI REMS
Because of the risk of serious infections, EMPAVELI is available only through a restricted program under a REMS. Under the EMPAVELI REMS, prescribers must enroll in the program and must counsel patients about the risk of serious infection, provide the patients with the REMS educational materials, and ensure patients are vaccinated against encapsulated bacteria. Enrollment and additional information are available by telephone: 1-888-343-7073 or at www.empavelirems.com.

Infusion-Related Reactions
Systemic hypersensitivity reactions (e.g., facial swelling, rash, urticaria) have occurred in patients treated with EMPAVELI. One patient (less than 1% in clinical studies) experienced a serious allergic reaction which resolved after treatment with antihistamines. If a severe hypersensitivity reaction (including anaphylaxis) occurs, discontinue EMPAVELI infusion immediately, institute appropriate treatment, per standard of care, and monitor until signs and symptoms are resolved.

Monitoring PNH Manifestations after Discontinuation of EMPAVELI
After discontinuing treatment with EMPAVELI, closely monitor for signs and symptoms of hemolysis, identified by elevated LDH levels along with sudden decrease in PNH clone size or hemoglobin, or reappearance of symptoms such as fatigue, hemoglobinuria, abdominal pain, dyspnea, major adverse vascular events (including thrombosis), dysphagia, or erectile dysfunction. Monitor any patient who discontinues EMPAVELI for at least 8 weeks to detect hemolysis and other reactions. If hemolysis, including elevated LDH, occurs after discontinuation of EMPAVELI, consider restarting treatment with EMPAVELI.

Interference with Laboratory Tests
There may be interference between silica reagents in coagulation panels and EMPAVELI that results in artificially prolonged activated partial thromboplastin time (aPTT); therefore, avoid the use of silica reagents in coagulation panels.

ADVERSE REACTIONS
The most common adverse reactions (incidence ≥10% of patients) with EMPAVELI vs. eculizumab were injection-site reactions (39% v. 5%), infections (29% v. 26%), diarrhea (22% v. 3%), abdominal pain (20% v. 10%), respiratory tract infection (15% v. 13%), viral infection (12% v. 8%), and fatigue (12% v. 23%).

USE IN SPECIFIC POPULATIONS
Females of Reproductive Potential
EMPAVELI may cause embryo-fetal harm when administered to pregnant women. Pregnancy testing is recommended for females of reproductive potential prior to treatment with EMPAVELI. Advise female patients of reproductive potential to use effective contraception during treatment with EMPAVELI and for 40 days after the last dose.

Please see full Prescribing Information, including Boxed WARNING regarding serious infections caused by encapsulated bacteria, and Medication Guide.

About Paroxysmal Nocturnal Hemoglobinuria (PNH)
PNH is a rare, chronic, life-threatening blood disorder characterized by the destruction of oxygen-carrying red blood cells through extravascular and intravascular hemolysis. Persistently low hemoglobin can result in frequent transfusions and debilitating symptoms such as severe fatigue, hemoglobinuria and difficulty breathing (dyspnea).

About the Apellis and Sobi Collaboration
Apellis and Sobi have global co-development rights for systemic pegcetacoplan. Sobi has exclusive ex-U.S. commercialization rights for systemic pegcetacoplan, and Apellis has exclusive U.S. commercialization rights for systemic pegcetacoplan and worldwide commercial rights for ophthalmological pegcetacoplan, including for geographic atrophy.

About Apellis 
Apellis Pharmaceuticals, Inc. is a global biopharmaceutical company that is committed to leveraging courageous science, creativity, and compassion to deliver life-changing therapies. Leaders in complement, we ushered in the first new class of complement medicine in 15 years with the approval of the first and only targeted C3 therapy. We are advancing this science to continually develop transformative medicines for people living with rare, retinal, and neurological diseases. For more information, please visit http://apellis.com or follow us on Twitter and LinkedIn.

Apellis Forward-Looking Statement
Statements in this press release about future expectations, plans and prospects, as well as any other statements regarding matters that are not historical facts, may constitute “forward-looking statements” within the meaning of The Private Securities Litigation Reform Act of 1995. The words “anticipate,” “believe,” “continue,” “could,” “estimate,” “expect,” “intend,” “may,” “plan,” “potential,” “predict,” “project,” “should,” “target,” “will,” “would” and similar expressions are intended to identify forward-looking statements, although not all forward-looking statements contain these identifying words. Actual results may differ materially from those indicated by such forward-looking statements as a result of various important factors discussed in the “Risk Factors” section of Apellis’ Quarterly Report on Form 10-Q with the Securities and Exchange Commission on May 4, 2022 and the risks described in other filings that Apellis may make with the Securities and Exchange Commission. Any forward-looking statements contained in this press release speak only as of the date hereof, and Apellis specifically disclaims any obligation to update any forward-looking statement, whether as a result of new information, future events or otherwise.

Media Contact: 
Lissa Pavluk
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617.977.6764

Investor Contact: 
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