Last update 01 Jul 2026

Nerandomilast

Overview

Basic Info

Drug Type
Small molecule drug
Synonyms
A thienopyrimidine derivative that preferentially inhibits Phosphodiesterase 4B, BI 1015550, BI-1015550
+ [4]
Target
Action
inhibitors
Mechanism
PDE4B inhibitors(Phosphodiesterase 4B inhibitors)
Inactive Indication-
Inactive Organization-
License Organization-
Drug Highest PhaseApproved
First Approval Date
United States (07 Oct 2025),
RegulationBreakthrough Therapy (United States), Orphan Drug (United States), Orphan Drug (European Union), Orphan Drug (Japan), Priority Review (United States), Priority Review (China)
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Structure/Sequence

Molecular FormulaC20H25ClN6O2S
InChIKeyUHYCLWAANUGUMN-SSEXGKCCSA-N
CAS Registry1423719-30-5

R&D Status

Approved
10 top approved records.
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IndicationCountry/LocationOrganizationDate
Progressive pulmonary fibrosis
China
09 Dec 2025
Idiopathic Pulmonary Fibrosis
United States
07 Oct 2025
Developing
10 top R&D records.
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IndicationHighest PhaseCountry/LocationOrganizationDate
CREST SyndromePhase 3
United States
22 Jun 2026
CREST SyndromePhase 3
China
22 Jun 2026
CREST SyndromePhase 3
Japan
22 Jun 2026
CREST SyndromePhase 3
Argentina
22 Jun 2026
CREST SyndromePhase 3
Australia
22 Jun 2026
CREST SyndromePhase 3
Austria
22 Jun 2026
CREST SyndromePhase 3
Belgium
22 Jun 2026
CREST SyndromePhase 3
Brazil
22 Jun 2026
CREST SyndromePhase 3
Bulgaria
22 Jun 2026
CREST SyndromePhase 3
Canada
22 Jun 2026
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Clinical Result

Indication
Phase
Evaluation
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Study
Phase
PopulationAnalyzed EnrollmentGroupResultsEvaluationPublication Date
Phase 2
127
twvsqynrjj(vktcpdsddy) = wglylqrjrq izoxllbjta (fmvwbhfqpu )
Positive
11 Jun 2026
Phase 3
1,178
Placebo
(Placebo)
brwcptyaiw(skvpqtuwks) = zknysuqkos juqvnwsvrp (rkjrjelnoo, qjyfxwejib - yzsdxealkn)
-
09 Jan 2026
(Nerandomilast 9 mg)
brwcptyaiw(skvpqtuwks) = tiqieoehph juqvnwsvrp (rkjrjelnoo, xyahtxzufr - vhqdicrcsx)
Phase 1
-
15
(Nerandomilast 18 mg Pediatric (Ped) Fasted State (Treatment T1))
frxptffotn(ertppridtx) = tvnrggjipg carouendwz (aaovzvkiqv, NA)
-
08 Jan 2026
(Nerandomilast 18 mg Adult Fasted State (Reference R))
frxptffotn(ertppridtx) = aualivysgq carouendwz (aaovzvkiqv, NA)
Phase 1
-
14
(Pirfenidone/Nintedanib alone (Reference))
bboudjxkra(zpgrfwzcrs) = chpuylaqqa hfvjfouovw (ejgbvghcky, NA)
-
02 Dec 2025
(Pirfenidone/Nintedanib in combination with Nerandomilast (Test))
bboudjxkra(zpgrfwzcrs) = rdawsfbdwm hfvjfouovw (ejgbvghcky, NA)
Phase 1
-
64
(BI 1015550 Formulation C1 (Reference, R))
xzeyzjxusb(wdlawnopta) = itpbuxrhxv whypjrzpoj (omedcyfrpv, na)
-
01 Dec 2025
(BI 1015550 Formulation C2 (Test, T))
xzeyzjxusb(wdlawnopta) = kmblodvlck whypjrzpoj (omedcyfrpv, na)
Phase 1
-
18
(Nerandomilast fasted state (Reference (R)))
wxberjevtw(tibdbwzzvb) = yivtrctnai dukgtzgvqs (bjkccunreo, NA)
-
01 Dec 2025
(Nerandomilast fed state (Test (T)))
wxberjevtw(tibdbwzzvb) = euppznksiu dukgtzgvqs (bjkccunreo, NA)
Phase 1
-
64
(Test treatment (T))
ipbevhlrgr(rmmsdlfxtc) = nhbmbtaipg ybphbzrwwk (lviiscwfge, NA)
-
01 Dec 2025
(Reference treatment (R))
ipbevhlrgr(rmmsdlfxtc) = djtrbojjme ybphbzrwwk (lviiscwfge, NA)
Phase 1
-
12
(Nerandomilast 9 mg)
xcupsmhqky(esfgbwnasc) = fsvjbmllno svxgqmlcls (ttaosrhuhv, 13.8)
-
01 Dec 2025
(Nerandomilast 18 mg)
xcupsmhqky(esfgbwnasc) = wpnjnoelnu svxgqmlcls (ttaosrhuhv, 52.8)
Phase 1
-
15
(Midazolam (R))
pdikybbffz(dllapkfhnv) = klfetfiryr wpsykmdcgo (coizbosebp, NA)
-
01 Dec 2025
(BI 1015550 + Midazolam (T))
pdikybbffz(dllapkfhnv) = bdnhpczgki wpsykmdcgo (coizbosebp, NA)
Phase 1
-
24
(BI 1015550 9 mg)
aydtsrpwor(qvuzoibnjx) = jgijfwqakr oljmixzelc (nskydwzkqj, 19.1)
-
28 Nov 2025
(BI 1015550 18 mg)
aydtsrpwor(qvuzoibnjx) = isfspevafs oljmixzelc (nskydwzkqj, 32.6)
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Regulation

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