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SPLIT Abs

Phase 1

Metastatic Colorectal Cancer | Small molecule | Oncology |Roche Holding AG|Last Updated: Aug 10, 2026

Success Probability

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Market & Valuation

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Trial Design

CONTROLLED
Total Trials1
Total Enrollment180

FDA Designations

No designations recorded

Clinical trial landscape

SPLIT Abs · 1 trial · 1 indication

Phase 1 1
NCT07416552A Study to Investigate CEA-PRIT 2.0 in Participants With Metastatic Colorectal Cancer (mCRC)Metastatic Colorectal Cancer
RECRUITING180 Analytics
PHASE1RECRUITING
A Study to Investigate CEA-PRIT 2.0 in Participants With Metastatic Colorectal Cancer (mCRC)
Metastatic Colorectal CancerUnlock trial analytics

Study Endpoints

Primary Endpoints

Part 1: Serum Concentration of SPLIT Abs
Up to approximately 48 weeks
Part 1: Time Course of Blood, Plasma, and Urine Radioactivity for 203Pb-DOTAM
Up to approximately 48 weeks
Part 1 to 2: Absorbed Radiation Dose of 212Pb-DOTAM extrapolated from 203Pb-DOTAM
Up to approximately 48 weeks
Part 1 to 3: Percentage of Participants With Adverse Events (AE)
Up to approximately 5 years

Secondary Endpoints

Part 1 to 2: Uptake of 203Pb-DOTAM in Tumor and Normal Tissue
Up to approximately 48 weeks
Part 1 to 2: Time Course of Blood, Plasma, and Urine Radioactivity for 203Pb-DOTAM
Up to approximately 48 weeks
Part 1 to 3: Serum Concentration of CEA-PRIT 2.0
Up to approximately 48 weeks
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Study Design & Arms

AllocationNON_RANDOMIZED
MaskingNONE
ModelSEQUENTIAL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Part 1 (Dosimetry)EXPERIMENTALParticipants will receive SeParated v-domains LInkage Technology Antibodies (SPLIT Abs) administered intravenously (IV). During Cycle 1, following an initial dosing interval, participants will receive 203Pb-DOTAM for imaging-based dosimetry assessment, followed by administration of 212Pb-DOTAM. In other cycles, participants will receive SPLIT Abs in combination with 212Pb-DOTAM only. Treatment will be administered every 4 weeks (Q4W) for up to 6 cycles. Each cycle is 28 days.
Part 2 (212Pb-DOTAM Administered Activity Escalation)EXPERIMENTALParticipants will receive SPLIT Abs at the dose and dosing interval selected in Part 1 in combination with 212Pb-DOTAM. The administered activity of 212Pb-DOTAM will be increased stepwise in each cohort to identify the maximum tolerated administered 212 activity (MTA) or a recommended Phase 2 administered activity (RP2A).
Part 3 (Expansion)EXPERIMENTALParticipants will receive SPLIT Abs in combination with 212Pb-DOTAM at the RP2A identified based on results from Parts 1 and 2.

Interventions

NameTypeDescription
SPLIT AbsDRUGParticipants will receive SPLIT Abs as part of the pretargeting regimen per the schedule described in the protocol.
203Pb-DOTAMDRUGParticipants will receive 203Pb-DOTAM as an imaging surrogate per the schedule described in the protocol.
212Pb-DOTAMDRUGParticipants will receive 212Pb-DOTAM as a therapeutic radioligand per the schedule described in the protocol.
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites2

Inclusion Criteria: * Histologically confirmed adenocarcinoma originating from the colon or rectum * Metastatic disease (Stage IV American Joint Committee on Cancer, Version 7) * Confirmed MSS and/or proficient mismatch repair (MMR) status * Experienced disease progression during or within 3 months...

Countries:United States
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Competitive Landscape -Colorectal Cancer 258 trials (matched to "Metastatic Colorectal Cancer")

Recent Changes (Last 90 Days)

LOWAug 11, 2026NCT07416552Status: NOT_YET_RECRUITING → RECRUITING
LOWAug 11, 2026NCT07416552Status: NOT_YET_RECRUITING → RECRUITING
LOWAug 11, 2026NCT07416552Status: NOT_YET_RECRUITING → RECRUITING
LOWAug 1, 2026NCT07416552Status: RECRUITING → NOT_YET_RECRUITING
LOWAug 1, 2026NCT07416552Status: RECRUITING → NOT_YET_RECRUITING
LOWAug 1, 2026NCT07416552Status: RECRUITING → NOT_YET_RECRUITING

Frequently asked questions about SPLIT Abs

What is SPLIT Abs used for in metastatic colorectal cancer?

SPLIT Abs is an investigational small molecule being studied for the treatment of metastatic colorectal cancer (mCRC). It is currently in Phase 1 clinical development, with an active trial recruiting participants in the United States. The drug is not yet approved and remains under investigation for this indication.

Who makes SPLIT Abs?

SPLIT Abs is being developed by Roche Holding AG, a biopharmaceutical company traded under the ticker RHHBY. The company is conducting a Phase 1 clinical trial to evaluate the drug in patients with metastatic colorectal cancer.

What phase is SPLIT Abs in?

SPLIT Abs is in Phase 1 clinical development. It is an investigational drug, meaning it has not been approved by regulatory authorities. The ongoing Phase 1 trial is actively recruiting participants to study its safety and effects in metastatic colorectal cancer.

What clinical trials is SPLIT Abs in?

SPLIT Abs is being evaluated in a single Phase 1 clinical trial with the identifier NCT07416552. The study, titled "A Study to Investigate CEA-PRIT 2.0 in Participants With Metastatic Colorectal Cancer (mCRC)," is recruiting 180 participants aged 18 years and older in the United States.

Is SPLIT Abs the same as CEA-PRIT 2.0?

Yes, SPLIT Abs is also known as CEA-PRIT 2.0. The Phase 1 clinical trial for the drug is titled "A Study to Investigate CEA-PRIT 2.0 in Participants With Metastatic Colorectal Cancer (mCRC)," confirming that these names refer to the same investigational therapy.