Pharming Group’s Joenja Gets Expanded Approval
FDA has granted Pharming Group expanded approval for Joenja (leniolisib) tablets for treating activated phosphoinositide 3-kinase delta syndrome (APDS) in children 4-11 years who weigh at least 27 kg. Joenja was first approved in 2023 for the same indication in patients 12 years and older at a dose of 70 mg orally twice a day. FDA says children 4-11 years take a weight-based dosage (40, 50, or 70 mg) orally twice a day.
APDS is a rare genetic disorder that impairs immune system cells. “These cells are necessary to recognize and attack foreign invaders, such as viruses and bacteria, to prevent infection,” FDA says. “People with APDS develop recurrent infections, particularly in the sinuses, ears, and respiratory tract. They also develop enlarged lymph nodes, tonsils, spleen, and other organs that can cause obstruction in the airway and gastrointestinal tract. Individuals with this condition often have low numbers of white blood cells, including red cells and platelets. Patients with APDS are more prone to develop blood cell cancers, like lymphoma.”
APDS is caused by mutations in the PIK3CD or PIK3R1 genes that encode the phosphoinositide-3 kinase delta (PI3K delta) protein, which is important for the normal development and function of white blood cells in the body, the agency says.
Approval was based on data from a single-arm, open-label study (Study LE 3301) that involved eight patients who received the recommended Joenja dosage based on body weight. “The pharmacokinetic data demonstrated no clinically significant difference between patients younger or older than 12 years,” FDA says.