Recent Updates
Recently added Catalysts

DRL_AB

Phase 1

Undisclosed | Monoclonal antibody | Other |Dr. Reddy's Laboratories Ltd|Trials Updated: Aug 4, 2026

DRL_AB development status

Highest phase Phase 1
Registered trials 1 across 1 sponsor since Aug 2026

DRL_AB target and mechanism

Molecular targetCD80/CD86
ModalityMonoclonal antibody

Success Probability

Subscribe to view

Market & Valuation

Subscribe to view

Trial Design

RandomizedACTIVE_CONTROLLED
Total Trials1
Total Enrollment160

FDA Designations

No designations recorded

DRL_AB clinical trials

DRL_AB · 1 trial · 1 indication

Phase 1 1
NCT07744828A Study to Evaluate Pharmacokinetics of DRL_AB in Healthy Male ParticipantsHealthy Volunteers
NOT YET_RECRUITING160 Analytics
PHASE1NOT YET_RECRUITING
A Study to Evaluate Pharmacokinetics of DRL_AB in Healthy Male Participants
Healthy VolunteersUnlock trial analytics

Study Endpoints

Primary Endpoints

Area Under the Serum Concentration Versus Time Curve From Time 0 Extrapolated to Time t (AUC0-t) of DRL_AB
Pre-dose on Day 1. Post-dose at 1, 4, 12, 24, 36, 48, 60, 72, 84, 96, 108, 120, 132, 144, 156, 168, 216, 336, 504, 672, 840, 1008, 1176, 1344 and 1680 hours
Maximum Measured Serum Concentration (Cmax) in DRL_AB
Pre-dose on Day 1. Post-dose at 1, 4, 12, 24, 36, 48, 60, 72, 84, 96, 108, 120, 132, 144, 156, 168, 216, 336, 504, 672, 840, 1008, 1176, 1344 and 1680 hours
Area Under the Serum Concentration Versus Time Curve From Time 0 Extrapolated to Infinite Time (AUC0-∞) of DRL_AB
Pre-dose on Day 1. Post-dose at 1, 4, 12, 24, 36, 48, 60, 72, 84, 96, 108, 120, 132, 144, 156, 168, 216, 336, 504, 672, 840, 1008, 1176, 1344 and 1680 hours

Secondary Endpoints

Time of the Maximum Measured Serum Concentration (Tmax) of DRL_AB
Pre-dose on Day 1. Post-dose at 1, 4, 12, 24, 36, 48, 60, 72, 84, 96, 108, 120, 132, 144, 156, 168, 216, 336, 504, 672, 840, 1008, 1176, 1344 and 1680 hours
Apparent Terminal Decline Rate Constant (λz) of DRL_AB
Pre-dose on Day 1. Post-dose at 1, 4, 12, 24, 36, 48, 60, 72, 84, 96, 108, 120, 132, 144, 156, 168, 216, 336, 504, 672, 840, 1008, 1176, 1344 and 1680 hours
Terminal Elimination Half-life (t1/2) of DRL_AB
Pre-dose on Day 1. Post-dose at 1, 4, 12, 24, 36, 48, 60, 72, 84, 96, 108, 120, 132, 144, 156, 168, 216, 336, 504, 672, 840, 1008, 1176, 1344 and 1680 hours
Unlock Study Endpoints

Study Design & Arms

AllocationRANDOMIZED
MaskingNONE
ModelPARALLEL
PurposeOTHER

Treatment Arms

ArmTypeDescription
DRL_AB 125 mg via AIEXPERIMENTALParticipants will receive a single subcutaneous (SC) dose of DRL\_AB, 125 milligrams (mg) in an AI on Day 1 of the treatment period of 70 days.
DRL_AB 125 mg via PFSACTIVE_COMPARATORParticipants will receive a single SC dose of DRL\_AB, 125 mg in a PFS on Day 1 of the treatment period of 70 days.

Interventions

NameTypeDescription
DRL_ABBIOLOGICALDRL\_AB administered as a SC injection.
Unlock Study Design Details

Eligibility Criteria

Age Range18 Years to 50 Years
SexMALE
Healthy VolunteersYes
Study Sites3

Inclusion Criteria: 1. Healthy male volunteers aged 18 to 50 years (both inclusive) at the time of signing informed consent form. 2. Ability and amenability to provide written informed consent to participate in the study and adhere to study requirements. 3. Body mass index in the range 18.5-30.0 ki...

Countries:New Zealand
Unlock Eligibility Criteria

Recent Changes (Last 90 Days)

LOWAug 4, 2026NCT07744828NEW_TRIAL: changed
LOWAug 4, 2026NCT07744828NEW_TRIAL: changed

Frequently asked questions about DRL_AB

What is DRL_AB?

DRL_AB is an investigational monoclonal antibody being developed by Dr. Reddy's Laboratories Ltd. It is in Phase 1 clinical development, with one active trial in healthy male volunteers. No approved indication has been announced, and the therapeutic indication for the program has not been disclosed.

What does DRL_AB target?

DRL_AB targets CD80 and CD86, two costimulatory molecules involved in T-cell activation. By binding these targets, the monoclonal antibody is designed to modulate CD80/CD86-mediated immune signaling. This target profile places DRL_AB among antibody therapeutics directed at costimulation pathways rather than at cytokines or cell-surface tumor antigens.

Who makes DRL_AB?

DRL_AB is being developed by Dr. Reddy's Laboratories Ltd, an Indian pharmaceutical company whose shares trade under the ticker RDY. Dr. Reddy's is the sponsor of the DRL_AB clinical program, which currently consists of a single Phase 1 study conducted in New Zealand.

What phase is DRL_AB in?

DRL_AB is in Phase 1 clinical development. It is an investigational monoclonal antibody and has not been approved for any indication. The program's only registered trial is a Phase 1 pharmacokinetic study, and no later-phase trials have been registered for this asset.

What clinical trials is DRL_AB in?

DRL_AB is being studied in NCT07744828, titled A Study to Evaluate Pharmacokinetics of DRL_AB in Healthy Male Participants. The Phase 1 trial is not yet recruiting, plans to enroll 160 healthy male volunteers aged 18 years and older, is randomized and active-controlled, and is being run in New Zealand.