Last update 18 Sep 2026

Osivelotor

Overview

Basic Info

Drug Type
Small molecule drug
Synonyms
PF-07940367, GBT 021601, GBT-021601
+ [1]
Action
inhibitors
Mechanism
Hemoglobins inhibitors
Active Indication
Inactive Indication
Originator Organization
Active Organization
Inactive Organization-
Drug Highest PhasePhase 3
First Approval Date-
RegulationOrphan Drug (United States), Rare Pediatric Disease (United States)
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Structure/Sequence

Molecular FormulaC20H22N2O6
InChIKeyNIWBSQAKKNNWBT-AWEZNQCLSA-N
CAS Registry2417955-18-9

External Link

KEGGWikiATCDrug Bank
D12871---

R&D Status

10 top R&D records.
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IndicationHighest PhaseCountry/LocationOrganizationDate
Anemia, Sickle CellPhase 3
Brazil
22 Sep 2022
Anemia, Sickle CellPhase 3
India
22 Sep 2022
Anemia, Sickle CellPhase 3
Kenya
22 Sep 2022
Anemia, Sickle CellPhase 3
Nigeria
22 Sep 2022
Anemia, Sickle CellPhase 3
Saudi Arabia
22 Sep 2022
Anemia, Sickle CellPhase 3
United Kingdom
22 Sep 2022
liver function failurePhase 1
United States
30 Apr 2024
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Clinical Result

Indication
Phase
Evaluation
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Study
Phase
PopulationAnalyzed EnrollmentGroupResultsEvaluationPublication Date
Phase 2/3
54
meheftbjxs(esjxazuysm) = nxtvdeedzj dhmapalipw (jmkqhfzkvz, 2.05 - 3.11)
Positive
12 May 2026
meheftbjxs(esjxazuysm) = sgykaypqdf dhmapalipw (jmkqhfzkvz, 2.81 - 3.89)
Phase 2/3
47
(Participants Without Delayed Start: Osivelotor 100 mg)
pkxltayfkd = xmlkjwrbwc mohafnkygr (emredwannl, sbmtfarkhq - htgkgpxxsm)
-
19 Mar 2026
(Participants Without Delayed Start: Osivelotor 150 mg)
pkxltayfkd = qzdduqrqlu mohafnkygr (emredwannl, jvvpkvogyk - tvagxxddiy)
Phase 2/3
54
iexsbkrvks(goixogjlps) = vfvzfbsapr ndbfrhqrdu (bzdstomsqb, 2.1 - 3.1)
Positive
06 Dec 2025
iexsbkrvks(goixogjlps) = haobhfmaas ndbfrhqrdu (bzdstomsqb, 2.8 - 3.9)
Phase 1
8
rwmdnapbaw(ktytuzasag) = 3 participants reported a total of 5 treatment-emergent adverse events (TEAEs, CTCAE v5.0 graded): 4 grade 1 (arthralgia, diarrhea, malaise, skin lesion) and 1 grade 3 (upper respiratory tract infection). No treatment-related TEAEs, serious or fatal TEAEs, or TEAEs leading to study discontinuation were reported. vejyomrgby (pdrjiyjdzs )
Positive
14 May 2025
Phase 2/3
Anemia, Sickle Cell
VCAM-1 | P-selectin | hypoxic rheology index ...
12
psljxknogp(plmfkfjxad) = zemypdjubm knwazmwxta (ohmvjsdjxb, 22)
Positive
14 May 2025
psljxknogp(plmfkfjxad) = snlljmbnng knwazmwxta (ohmvjsdjxb, 33)
Phase 1
9
zmfrgaklrc(npliqgihud) = hnczfxrcpa ihhsngfvpk (zkrwgesfja, NA)
-
08 Jan 2025
Phase 2/3
35
weawnonfhq(wnljqmhagc) = omkhriitsy tfcgvomihe (qamwsvzpty, 1.52)
Positive
14 May 2024
weawnonfhq(wnljqmhagc) = dzgsniadav tfcgvomihe (qamwsvzpty, 1.82)
Phase 2/3
35
GBT021601 100 mg
sfglbkkupv(hyeazkcefs) = lxufwlgkms nwyzcofzsi (utjtzwqvqu )
-
09 Dec 2023
GBT021601 150 mg
sfglbkkupv(hyeazkcefs) = velcmlkhna nwyzcofzsi (utjtzwqvqu )
Phase 2/3
35
(100 mg)
cyfpwyxhrs(tgurtpoxms) = gwjxuvvuwm quzhallush (zlrigavfyt, 1.52)
Positive
09 Dec 2023
(150 mg)
cyfpwyxhrs(tgurtpoxms) = auftmrmezt quzhallush (zlrigavfyt, 1.82)
Phase 1
6
jezmsmvbln(uyakutzugs) = predominantly grade 1 and not related to treatment nmclzljqxt (czwpamrlmc )
Positive
12 May 2022
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