This is a Phase 3 global, multicenter, 52-week, open-label extension (OLE) rollover study for subjects completing study CN012-0026, CN012-0027 or CN012-0056. Subjects (randomized or non-randomized) who complete the 38-week CN012-0026 study, 14-week CN012-0027 study or 14-week CN012-0056 study will be eligible to enroll in CN012-0028. The primary objective of the study is to assess the long-term safety and tolerability of KarXT in subjects with psychosis associated with Alzheimer's Disease.

Inclusion Criteria:

• Must have completed study KAR-031 (CN012-0026), KAR-032(CN012-0027), or CN012-0056. This Inclusion criterion is not applicable for Protocol Amendment 07 or later versions.

• Can understand the nature of the study and protocol requirements and provide a signed informed consent (IC) form before any study assessments are performed. If the subject is deemed not competent to provide IC, both the following requirements for consent must be met:

  1. The subject's legally acceptable representative (LAR) must provide IC
  2. The subject must provide informed assent

• Must have stable living environment. At entry into this study, or any time during the study, if a subject needs to relocate from home, a residential assisted-living facility, or other stable location to a nursing home facility, the Sponsor/Medical Monitor must approve the subject's participation in the study.

Exclusion Criteria:

• Significant or severe medical conditions that, in the opinion of the Investigator, could jeopardize the safety of the subject, ability to complete or comply with the study procedures or validity of the study results.
• Clinically significant abnormalities, including any finding(s) from the ECG, laboratory tests, physical examination, or vital signs, at the EOT visit of Study KAR-031 (Visit 19), Study KAR-032 (Visit 12), Study CN012-0056 (Visit 12) that the Investigator, in consultation with the Medical Monitor, are considered to jeopardize the safety of the subject.
• Subjects participating in another investigational drug or device study or planning on participating in another clinical study during the duration of KAR-033.
• Other protocol-defined Inclusion/Exclusion criteria apply.

BMS will provide access to individual anonymized participant data upon request from qualified researchers, and subject to certain criteria. Additional information regarding Bristol Myer Squibb's data sharing policy and process can be found at https://www.bms.com/researchers-and-partners/clinical-trials-and-research.html

See Plan Description

See Plan Description