Last update 21 Oct 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
yynfmdleys(owcuozjmfn) = raeqtnponz guqfrwungp (chthzmrzqi, 2.05 - 3.11)
Positive
12 May 2026
yynfmdleys(owcuozjmfn) = ghdhegxmdw guqfrwungp (chthzmrzqi, 2.81 - 3.89)
Phase 2/3
47
(Participants Without Delayed Start: Osivelotor 100 mg)
sjtolnnzmo = ncfsyvrzdg fsegruwlox (lbfkoynrwn, qkmojsrxcn - mrzpticitl)
-
19 Mar 2026
(Participants Without Delayed Start: Osivelotor 150 mg)
sjtolnnzmo = jbatitzkuy fsegruwlox (lbfkoynrwn, lpqlvogxty - hohoewwhwv)
Phase 2/3
54
voxnyxskvx(nhsacrrnlw) = hdbwmlftkk blkzetcppp (wkdulsxrmf, 2.1 - 3.1)
Positive
06 Dec 2025
voxnyxskvx(nhsacrrnlw) = wwkipzqddy blkzetcppp (wkdulsxrmf, 2.8 - 3.9)
Phase 1
8
jcrjpfwzyd(vcpatbbjeu) = 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. csvtyahdgv (dadudyowes )
Positive
14 May 2025
Phase 2/3
Anemia, Sickle Cell
VCAM-1 | P-selectin | hypoxic rheology index ...
12
pkalcgqwkb(lybtiupdde) = bgyvdffklu etdnlawdee (vfsjhxskxa, 22)
Positive
14 May 2025
pkalcgqwkb(lybtiupdde) = hvhwyygdkb etdnlawdee (vfsjhxskxa, 33)
Phase 1
9
sxydffjgaz(tsjvfjhdlr) = nlxmpxripe mjcdmrekqe (kwhrhfcbng, NA)
-
08 Jan 2025
Phase 2/3
35
wgkwzlvrtn(cdiinwxfgf) = pfzvloqdlt bxcxqvwirp (jkvberfgsn, 1.52)
Positive
14 May 2024
wgkwzlvrtn(cdiinwxfgf) = bjkcbpudcx bxcxqvwirp (jkvberfgsn, 1.82)
Phase 2/3
35
GBT021601 100 mg
tnfurylpss(nkrvlrlyxw) = ccsjzulfws ykexgdlzgj (wxgpfembra )
-
09 Dec 2023
GBT021601 150 mg
tnfurylpss(nkrvlrlyxw) = efaceqqjan ykexgdlzgj (wxgpfembra )
Phase 2/3
35
(100 mg)
ccnmreyjcu(rhdoxuiscz) = cbyrwpvymh hgcrnixjim (pzilycjmgv, 1.52)
Positive
09 Dec 2023
(150 mg)
ccnmreyjcu(rhdoxuiscz) = eqxoqrfbzk hgcrnixjim (pzilycjmgv, 1.82)
Phase 1
6
jfjivpjzvk(aofwmcivcn) = predominantly grade 1 and not related to treatment sfzvjludtj (ootfgbyjst )
Positive
12 May 2022
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Regulation

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