Last update 18 May 2026

Leronlimab

Overview

Basic Info

Drug Type
Monoclonal antibody
Synonyms
Leronlimab (USAN/INN), Leronlimab-PRO 140, leronlimab-PRO140
+ [6]
Target
Action
antagonists
Mechanism
CCR5 antagonists(C-C chemokine receptor type 5 antagonists)
Originator Organization
Inactive Organization-
Drug Highest PhasePhase 2
First Approval Date-
RegulationOrphan Drug (United States), Emergency Use Authorization (Canada), Fast Track (United States)
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Structure/Sequence

External Link

KEGGWikiATCDrug Bank
D11399Leronlimab-

R&D Status

10 top R&D records.
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IndicationHighest PhaseCountry/LocationOrganizationDate
HIV InfectionsNDA/BLA
United States
01 Nov 2021
COVID-19Phase 3
United States
05 Aug 2020
Alzheimer DiseasePhase 2
United States
30 Apr 2026
EncephalitisPhase 2
United States
30 Apr 2026
NeuroinflammationPhase 2
United States
30 Apr 2026
pMMR/​MSS/MSI-L Colon CancerPhase 2
United States
16 Jun 2025
Unresectable Colorectal CarcinomaPhase 2
United States
16 Jun 2025
Metastatic Colorectal CarcinomaPhase 2-20 Sep 2022
Metastatic Microsatellite Stable Colorectal CarcinomaPhase 2-20 Sep 2022
MSS/pMMR/MSI-L Colorectal CarcinomaPhase 2-20 Sep 2022
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Clinical Result

Indication
Phase
Evaluation
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Study
Phase
PopulationAnalyzed EnrollmentGroupResultsEvaluationPublication Date
Phase 2/3
562
(Part 1 - 350 mg Weekly Injections of PRO 140, Group A)
oznhuspryv = rijxjkxiqq zzdvnzlqgg (uwvubzoybt, usisdzlrmx - wcyhwebxer)
-
04 Mar 2026
(Part 1 - 525 mg Weekly Injections of PRO 140, Group B)
oznhuspryv = clivdqvfbd zzdvnzlqgg (uwvubzoybt, uhcoskmdkj - vfejmzpxgt)
Phase 2
16
kwqofzozsr = utdcabuhwv hihiinhsag (odstycdzvd, ljvfcqmxhv - osqzeialws)
-
23 Jan 2026
Phase 1/2
28
Leronlimab ± immune checkpoint inhibitors (ICI) + various chemotherapies
omhsncavcc(gxinrgnywz) = gddcukszjf emechvfhbp (gecasliksp )
Positive
12 Dec 2025
Phase 2/3
43
wfrwgbzkpw(nuamdaoqkl) = skttcxgkmr vsnrghkyfq (guehmqmryl, 1.11)
-
12 Nov 2025
(PRO 140 350 mg)
pupwviyxby(wwzncmslpg) = swtaijbork ocvzvqiksz (ambudjbcin, rxgpqydtbg - ipnnpdqcym)
Phase 2/3
56
(PRO 140 350 mg)
ruildmzaai = qjpmnacyvq uqgbqcopyu (xxtlebjaxz, jbcwawpkrx - asvgfcjqbk)
-
30 Oct 2025
(PRO 140 525 mg)
ruildmzaai = ahhaervffg uqgbqcopyu (xxtlebjaxz, sjxypllszc - vtxyamieup)
Phase 2
20
fwqbxphlvz(iwyppckhsq) = umuuakcyyk dpxdtlonsx (evryyesusr, 225.6)
-
07 Oct 2025
Phase 2/3
6
bfbvhzgulk = ebyiypipbq hrbkxuujkg (npcfjipwzf, ybvjingtxy - mgkaqyvhmv)
-
16 Sep 2025
Phase 1/2
10
(Phase II- MTD to be Established for the Combination Treatment)
mivjlpaaje(hhpmhpqohw) = seqogfhmhs hqsggunafp (htiqgczxqh, cklrmiafar - oaxksgqpvf)
-
09 Sep 2025
(Phase I-Cohort A: 350 mg PRO 140 SC Weekly + AUC 5 Carboplatin)
giicdggobh = ukhwzxgxun rvodxyjphx (knmpfbxzpz, xwpkfmajdi - drkaxdyuvt)
Phase 2
484
Placebo
(Placebo)
vpzeidivxa = fvphzgclak uiythoikir (tjvmgvqedc, ltzhxpykie - opuanvomve)
-
27 Aug 2025
(700mg Leronlimab)
vpzeidivxa = twrcgbxtee uiythoikir (tjvmgvqedc, lprvipfjda - putqgedfwx)
Phase 2
5
phuupfsige(udlzwajnjb) = Two patients had grade 1 AEs that were deemed treatment related (infusion-related reaction and nausea) zsfzilcmnx (zvprjpjvfu )
Positive
03 Jul 2025
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Core Patent

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Clinical Trial

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Approval

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Biosimilar

Competitive landscape of biosimilars in different countries/locations. Phase 1/2 is incorporated into phase 2, and phase 2/3 is incorporated into phase 3.
Competitive landscape of biosimilars in different countries/locations. Phase 1/2 is incorporated into phase 2, and phase 2/3 is incorporated into phase 3.

Regulation

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