Drugs / zatolmilast
last change Dec 2025 re-read 2 minutes ago

zatolmilast

also known as BPN14770

Small molecule targets PDE4D

Developed for
Alzheimer disease · fragile X syndrome
Investigated by
Tetra Discovery Partners · Shionogi · National Institute of Mental Health (NIMH)

Trials 12 · a red edge is where a trial was stopped

PhaseRegistry idDatesIndicationSponsorStatusOutcome
Phase 17 trials
Phase 1 NCT07018492 Aug → Nov 2025 Shionogi Completed No outcome recorded
Phase 1 NCT07012005 Aug → Dec 2025 impaired renal function disease Shionogi Completed No outcome recorded
Phase 1 NCT07011992 Jul 2025 Shionogi Completed No outcome recorded
Phase 1 NCT04044781 Jan → Apr 2020 Tetra Discovery Partners Withdrawn No outcome recorded
Phase 1 NCT03030105 Jan → May 2017 Alzheimer disease Tetra Discovery Partners Completed No outcome recorded
Phase 1 NCT02840279 Jun → Nov 2016 Alzheimer disease Tetra Discovery Partners Completed No outcome recorded
Phase 1 NCT02648672 Dec 2015 → Feb 2016 Alzheimer disease Tetra Discovery Partners Completed No outcome recorded
Phase 1/21 trial
Phase 1/2 NCT03861000 Mar 2019 → Feb 2020 depressive disorder National Institute of Mental Health (NIMH) Completed No outcome recorded
Phase 23 trials
Phase 2 NCT06717438 May 2025 → Dec 2027 expected Shionogi Active not recruiting No outcome recorded
Phase 2 NCT03817684 Apr 2019 → Feb 2020 Alzheimer disease Tetra Discovery Partners Completed No outcome recorded
Phase 2 NCT03569631 Jul 2018 → Jul 2020 fragile X syndrome Tetra Discovery Partners Completed No outcome recorded
Phase 31 trial
Phase 3 NCT05367960 Nov 2022 → Sep 2027 expected fragile X syndrome Tetra Discovery Partners Active not recruiting No outcome recorded
Also used as a comparator or background therapy in 2 trials
PhaseRegistry idDatesIndicationSponsorStatusOutcome
Phase 2/31 trial
Phase 2/3 NCT05163808 Comparator Mar 2022 → Sep 2025 fragile X syndrome Tetra Discovery Partners Completed No outcome recorded
Phase 31 trial
Phase 3 NCT05358886 Comparator Nov 2022 → Jul 2025 fragile X syndrome Tetra Discovery Partners Completed No outcome recorded

Evidence & citations 6 cited values

Every value below carries the sentence it was read from. 14 sources stand behind the page.

FieldValueCited text
Known as zatolmilast “BPN14770/ zatolmilastNCT05358886
2

NCT05163808

NCT05367960

Known as BPN14770 “Zatolmilast/ BPN14770NCT05367960
12

NCT07012005

NCT05358886

NCT03569631

NCT06717438

NCT03030105

NCT02840279

NCT07018492

NCT02648672

NCT07011992

NCT03817684

NCT04044781

NCT03861000

Action Inhibit “negative allosteric modulator of phosphodiesterase 4D” NCT02648672
Modality Small molecule “BPN14770 is a small molecule, subtype selective, negative allosteric modulator of phosphodiesterase 4D.” NCT02648672
Route Oral “single oral dose of BPN14770” NCT02648672
Target PDE4D “modulator of phosphodiesterase 4D” NCT02648672