Drugs / N-Acetylcysteine Amide
last change Aug 2026 re-read 9 days ago

N-Acetylcysteine Amide

also known as NPI-001
Developed for
cystinosis · retinitis pigmentosa · Usher syndrome
Investigated by
Nacuity Pharmaceuticals, Inc.

Trials 2

202420252026202720282029
PhaseRegistry idDatesIndicationSponsorStatusOutcome
Phase 1/21 trial
Phase 1/2 NCT05994534 Oct 2023 → Aug 2026 overdue cystinosis Nacuity Pharmaceuticals, Inc. Active not recruiting No outcome recorded
Phase 31 trial
Phase 3 NCT07290530 Dec 2026 → Jul 2029 expected Usher syndrome, retinitis pigmentosa Nacuity Pharmaceuticals, Inc. Not yet recruiting No outcome recorded

News releases announcing trial results or a regulatory action · 3

DateIssuerRelease
2025-10-02 Nacuity Pharmaceuticals, Inc. Regulatory Nacuity Pharmaceuticals Granted U.S. FDA Breakthrough Therapy Designation for NPI-001 (N-acetylcysteine amide) Tablets for the Treatment of Retinitis Pigmentosa nacuity.com ↗
today announced that the U.S. Food and Drug Administration (FDA) has granted Breakthrough Therapy Designation (BTD) to NPI-001 (N-acetylcysteine amide) tablets
2025-01-21 Nacuity Pharmaceuticals, Inc. Regulatory Nacuity Pharmaceuticals Granted U.S. FDA Fast Track Designation for NPI-001 (N-acetylcysteine amide) Tablets for the Treatment of Retinitis Pigmentosa nacuity.com ↗
Nacuity Pharmaceuticals, Inc., a clinical-stage biopharmaceutical company developing treatments for retinitis pigmentosa, cataracts and other diseases caused by oxidative stress, today announced that the U.S. Food and Drug Administration (FDA) has granted Fast Track designation to NPI-001 (N-acetylcysteine amide) tablets, Nacuity’s proprietary investigational therapy for the treatment of patients with retinitis pigmentosa (RP).
2024-03-12 Nacuity Pharmaceuticals, Inc. Regulatory Arctic Therapeutics and Nacuity Pharmaceuticals Announce European Medicines Agency Approval to Initiate First Clinical Trial of AT-001 (NPI-001) for the Treatment of HCCAA nacuity.com ↗

Evidence & citations 3 cited values

Every value below carries the sentence it was read from. 2 sources stand behind the page.

FieldValueCited text
Known as N-acetylcysteine amide ClinicalTrials.gov intervention name — accepted as the source's own label NCT07290530 ↗
1

NCT05994534 ↗

Known as NPI-001 “N-acetylcysteine amide (NPI-001) tablets (250 mg), taken BID” NCT07290530 ↗
Route Oral “Single dose, oral solution” NCT05994534 ↗