On April 30, 2020 Puma Biotechnology, Inc. (Nasdaq: PBYI), a biopharmaceutical company, and Bixink Therapeutics, a new South Korean company working in the field of anti-cancer drugs and digital therapeutics, reported that they have entered into an exclusive agreement under which Bixink will commercialize NERLYNX (neratinib) in South Korea (Press release, Puma Biotechnology, APR 30, 2020, View Source [SID1234556870]).
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Bixink will be responsible for seeking the requisite regulatory approval and, once approved, for commercializing NERLYNX in South Korea. Under the terms of the agreement, Puma will receive upfront and milestone payments of up to $6 million, as well as significant double-digit royalties on the sales of NERLYNX in South Korea.
"Our new agreement with Bixink demonstrates our commitment to bringing NERLYNX to patients around the world while continuing to focus our commercial resources on the U.S. market," stated Alan H. Auerbach, Chief Executive Officer and President of Puma. "We are excited about the potential to provide South Korean breast cancer patients with access to NERLYNX."
"We are excited about the opportunity to provide NERLYNX to patients with HER2-positive breast cancer in South Korea and plan to file for its market authorization before the end of 2020," said Dr. Sung Chul Kim, Chief Executive Officer of Bixink Therapeutics. "NERLYNX is our top priority as we aspire to be a leading South Korean company in the field of oncology therapeutics."
Neratinib is approved in the United States for both the extended adjuvant treatment of adult patients with early stage HER2-positive breast cancer following adjuvant trastuzumab-based therapy and HER2-positive metastatic breast cancer and is marketed in the United States as NERLYNX (neratinib) tablets.
About HER2-Positive Breast Cancer
Approximately 20% to 25% of breast cancer tumors over-express the HER2 protein. HER2-positive breast cancer is often more aggressive than other types of breast cancer, increasing the risk of disease progression and death. Although research has shown that trastuzumab can reduce the risk of early stage HER2-positive breast cancer returning after surgery, up to 25% of patients treated with trastuzumab experience recurrence.
IMPORTANT SAFETY INFORMATION
NERLYNX (neratinib) tablets, for oral use
INDICATIONS AND USAGE: NERLYNX is a kinase inhibitor indicated:
As a single agent, for the extended adjuvant treatment of adult patients with early-stage HER2-positive breast cancer, to follow adjuvant trastuzumab-based therapy.
In combination with capecitabine, for the treatment of adult patients with advanced or metastatic HER2-positive breast cancer, who have received two or more prior anti-HER2 based regimens in the metastatic setting.
CONTRAINDICATIONS: None
WARNINGS AND PRECAUTIONS:
Diarrhea: Aggressively manage diarrhea. If diarrhea occurs despite recommended prophylaxis, treat with additional antidiarrheals, fluids, and electrolytes as clinically indicated. Withhold NERLYNX in patients experiencing severe and/or persistent diarrhea. Permanently discontinue NERLYNX in patients experiencing Grade 4 diarrhea or Grade ≥ 2 diarrhea that occurs after maximal dose reduction.
Hepatotoxicity: Monitor liver function tests monthly for the first 3 months of treatment, then every 3 months while on treatment and as clinically indicated. Withhold NERLYNX in patients experiencing Grade 3 liver abnormalities and permanently discontinue NERLYNX in patients experiencing Grade 4 liver abnormalities.
Embryo-Fetal Toxicity: NERLYNX can cause fetal harm. Advise patients of potential risk to a fetus and to use effective contraception.
ADVERSE REACTIONS:
The most common adverse reactions (reported in ≥ 5% of patients) were as follows:
NERLYNX as a single agent: Diarrhea, nausea, abdominal pain, fatigue, vomiting, rash, stomatitis, decreased appetite, muscle spasms, dyspepsia, AST or ALT increased, nail disorder, dry skin, abdominal distention, epistaxis, weight decreased, and urinary tract infection.
NERLYNX in combination with capecitabine: Diarrhea, nausea, vomiting, decreased appetite, constipation, fatigue/asthenia, weight decreased, dizziness, back pain, arthralgia, urinary tract infection, upper respiratory tract infection, abdominal distention, renal impairment, and muscle spasms.
To report SUSPECTED ADVERSE REACTIONS, contact Puma Biotechnology, Inc. at 1-844-NERLYNX (1-844-637-5969) and www.NERLYNX.com or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch.
DRUG INTERACTIONS:
Gastric acid reducing agents: Avoid concomitant use with proton pump inhibitors. When patients require gastric acid reducing agents, use an H2-receptor antagonist or antacid. Separate NERLYNX by at least 3 hours with antacids. Separate NERLYNX by at least 2 hours before or 10 hours after H2-receptor antagonists.
Strong CYP3A4 inhibitors: Avoid concomitant use.
Moderate CYP3A4 and P-glycoprotein (P-gp) dual inhibitors: Avoid concomitant use.
Strong or moderate CYP3A4 inducers: Avoid concomitant use.
P-glycoprotein (P-gp) substrates: Monitor for adverse reactions of narrow therapeutic agents that are P-gp substrates when used concomitantly with NERLYNX.
USE IN SPECIFIC POPULATIONS:
Lactation: Advise women not to breastfeed.
Please see Full Prescribing Information for additional safety information.
To help ensure patients have access to NERLYNX, Puma has implemented the Puma Patient Lynx support program to assist patients and healthcare providers with reimbursement support and referrals to resources that can help with financial assistance. More information on the Puma Patient Lynx program can be found at www.NERLYNX.com or 1-855-816-5421.