For ATTRv-PN participants, Part 1 consists of an open-label, single-ascending dose study, which identifies the dose for evaluation in the cohort expansion of Part 2. Part 2 will follow as an open-label, dose expansion study to further characterize the activity of NTLA-2001, provide an initial assessment of the effect of NTLA-2001 on clinical measures of neuropathy and neurological function, and obtain additional safety data.~For ATTR-CM participants, Part 1 consists of an open-label, single-ascending dose study, which identifies the dose for evaluation in the cohort expansion of Part 2. Part 2 will follow as an open-label, dose expansion study to further characterize the activity of NTLA-2001, provide an initial assessment of the effect of NTLA-2001 on cardiac measures, and obtain additional safety data.~All participants who are dosed with NTLA-2001 will be offered to participate in a long-term safety monitoring follow-up study via a separate protocol.
This study will be conducted to evaluate the safety, tolerability, pharmacokinetics (PK), and pharmacodynamics (PD) of NTLA-2001 in participants with hereditary transthyretin amyloidosis with polyneuropathy (ATTRv-PN) and participants with hereditary transthyretin amyloidosis with cardiomyopathy (ATTRv-CM) or wild type cardiomyopathy (ATTRwt-CM)