Alpelisib's Long-Term safety tracked in PIK3CA patients

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Key Inclusion Criteria: * Written informed consent/assent, according to local guidelines, signed by the participants and/or by the parents or legal guardian prior to enrolling in the roll-over study. * Participant currently enrolled in a Novartis-sponsored study, is currently receiving alpelisib as a single agent or in combination with other drugs, and has fulfilled all on-treatment requirements in the parent study. * Participant is currently benefiting from the treatment with alpelisib as determined by the Investigator in the parent study. * Participant demonstrated compliance with the visit schedule in the parent study, and in the opinion of the Investigator has shown willingness and ability to comply with future visit schedules, treatment plans, and any other study procedures in this protocol. Key Exclusion Criteria: * Participant had permanently discontinued from alpelisib in the parent study for any reason including withdrawal of consent. * Participant currently has ongoing/unresolved treatment related Grade 3 or higher AEs, and/or any ongoing/unresolved AE or toxicities for which alpelisib dosing has been interrupted in the parent study. Participants meeting all other eligibility criteria may be enrolled once toxicities have improved to allow alpelisib dosing to resume as stated in the parent protocol. * Participant's ongoing treatment is currently approved and reimbursed for their indication at their country level. In exceptional cases where the treatment is reimbursed at the country level, but not individual level, please contact the Novartis Study Team. * Concurrent participation in any other investigational clinical trial other than the parent study. * Pregnant or nursing (breastfeeding) women. * Female participants of childbearing potential who do not consent to use a highly effective method of contraception, and male participants who do not consent to use a condom and/or a highly effective method of contraception, including refraining from sperm donation and complying with measures to prevent exposure of a partner to alpelisib via seminal fluid, for the duration of the study and for one week following discontinuation of alpelisib (or longer if required per parent protocol). Other inclusion/exclusion criteria may apply.