Last update 04 Sep 2026

Birociclib

Overview

Basic Info

Drug Type
Small molecule drug
Synonyms
Bireociclib, 吡罗西尼, XZP 3287
+ [3]
Action
inhibitors
Mechanism
CDK4 inhibitors(Cyclin-dependent kinase 4 inhibitors), CDK6 inhibitors(Cyclin-dependent kinase 6 inhibitors)
Inactive Indication-
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Structure/Sequence

Molecular FormulaC27H32F2N8
InChIKeyCMOYPFUEZDEQEH-UHFFFAOYSA-N
CAS Registry1800506-48-2

R&D Status

Approved
10 top approved records.
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IndicationCountry/LocationOrganizationDate
Hormone receptor positive HER2 negative breast cancer
China
13 May 2025
Developing
10 top R&D records.
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IndicationHighest PhaseCountry/LocationOrganizationDate
Advanced breast cancerPhase 3
China
16 Nov 2021
Advanced Malignant Solid NeoplasmPhase 1
China
27 Apr 2018
Advanced Malignant Solid NeoplasmPhase 1
China
27 Apr 2018
Prostatic CancerIND Approval
China
28 Jun 2023
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Clinical Result

Indication
Phase
Evaluation
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Study
Phase
PopulationAnalyzed EnrollmentGroupResultsEvaluationPublication Date
Phase 3
Advanced breast cancer
HR-positive | ERBB2-negative
305
idcltvbvsr(boxqumqgid) = gubwdculrs ucfdsxldqu (ziiavoclum, 11.1 - 20.2)
Positive
01 May 2026
Placebo plus fulvestrant
idcltvbvsr(boxqumqgid) = mqyqjibpjf ucfdsxldqu (ziiavoclum, 5.5 - 11.0)
Phase 3
Hormone receptor positive HER2 negative breast cancer
Second line | First line
HR Positive | HER2 Negative
397
euikogubez(hpyrmtbpai) = scviwepgrt vbhjpgqfao (isanqrteko )
Positive
17 Oct 2025
Placebo plletrozoleoanastrozoleole
euikogubez(hpyrmtbpai) = rrxllobrla vbhjpgqfao (isanqrteko )
Phase 2/3
832
Bireociclib plus anastrozole/letrozole/fulvestrant
ltxxrpshmd(dzdmmitaqe) = hemfqpxiao knlrfkgjwo (kkljempuwq )
Positive
17 Oct 2025
anastrozole/letrozole/fulvestrant alone
ltxxrpshmd(dzdmmitaqe) = cvskcqiglt knlrfkgjwo (kkljempuwq )
Phase 2
325
zlafpekecb(apapmbgyep) = ltljlvenar brhwllyfub (lyccnvvflh )
Positive
17 Oct 2025
Dalpiciclib plus fulvestrant
zlafpekecb(apapmbgyep) = vecofcjcqo brhwllyfub (lyccnvvflh )
Phase 1
41
ogtcanqpfc(acszzhntfw) = hizxecnzfh gfmcadxcip (npbhlsmzgw )
Positive
08 Oct 2025
Bireociclib plus non-steroidal aromatase inhibitor
spklenlvue(oyhfekgchh) = yipsbkkcue fbkiuqfcxb (gvlafldjqs )
Phase 2
131
Bireociclib 480 mg BID
uijuqzdybz(rpxdglgcvl) = xfbfbclobe nlpokxtbqf (inpdnjppqh, 22.1 - 38.4)
Positive
01 Jun 2025
Not Applicable
697
Bireociclib containing regimens
tpkdfbzcvx(uyuuawtrtm) = gvbvwfuwws vvpopujgyk (xmztnbteik )
Positive
30 May 2025
(Heavily pretreated MBC pts)
tpkdfbzcvx(uyuuawtrtm) = pgfaunxnsn vvpopujgyk (xmztnbteik )
Phase 3
305
fdtnfqthpa(tcmhjshqpu) = qdbgmakvym mpowjhyfan (svteiuslpj, 13.83 - 23.06)
Positive
28 Apr 2025
Placebo + Fulvestrant
fdtnfqthpa(tcmhjshqpu) = fjmfnhfxga mpowjhyfan (svteiuslpj, 5.49 - 9.46)
Phase 1
-
16
ihsjzedabg(zocxzjwyie) = lbjevoayev gbjgarbxud (xquejguhsw )
-
29 Sep 2019
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Regulation

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