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TAS-102

Phase 1

Colon Adenocarcinoma | Small molecule | Oncology |Natera, Inc.|Last Updated: May 11, 2026

Success Probability

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Market & Valuation

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Trial Design

UNCONTROLLEDDMC
Total Trials1
Total Enrollment22

FDA Designations

No designations recorded

Clinical trial landscape

TAS-102 · 1 trial · 2 indications

Phase 1 1
NCT04920032Study of ctDNA Guided Change in Tx for Refractory Minimal Residual Disease in Colon AdenocarcinomasColon Adenocarcinoma
RECRUITING22 Analytics
PHASE1RECRUITING
Study of ctDNA Guided Change in Tx for Refractory Minimal Residual Disease in Colon Adenocarcinomas
Colon AdenocarcinomaUnlock trial analytics

Study Endpoints

Primary Endpoints

Percentage of ctDNA positivity in treatment cohort after 6 cycles or at least 3 months of adjuvant treatment
6 months

Percent of patients positive for ctDNA after 6 cycles or at least 3 months months after starting adjuvant treatment will be used to estimate the efficacy of adjuvant trifluridine and tipiracil (TAS102) in combination with irinotecan in patients with ctDNA positive colon adenocarcinoma. The Signatera MRD ctDNA Assay will be used to measure ctDNA positivity.

Secondary Endpoints

Percentage of Grade 3-5 Adverse Events
8 weeks
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Study Design & Arms

AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
TASIRIEXPERIMENTALPatients randomized to the experimental arm ("TASIRI") will be treated with TAS-102 25mg/m2 p.o. on days 1-5 and irinotecan 180mg/m2 i.v. on day 1 every 14 days. If ANC \<1500/uL on day 1 of a cycle, then G-CSF will be added on day 6 for three days.

Interventions

NameTypeDescription
TAS-102DRUGGiven PO
IrinotecanDRUGGiven IV
Standard TreatmentCOMBINATION_PRODUCT6 cycles for a 2-week regimen (infusional 5FU based) and up to 4 cycles for a 3-week regimen (oral capecitabine based) after randomization
Signatera MRD ctDNA AssayDIAGNOSTIC_TESTTo be performed within 6-8 weeks of Cycle 1 Day 1. A Mid-treatment ctDNA is to be completed within 6 - 8 weeks of starting treatment. ctDNA is to also be completed within four weeks after completion of study treatment (+/- two weeks)
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites1

Inclusion Criteria: 1. Patients must have histologically or cytologically confirmed adenocarcinoma of the colon (high rectal cancer is eligible if resected and no radiation needed). Other histologies which are treated per NCCN guidelines for adjuvant colon cancer are eligible. 2. Must have Stage II...

Countries:United States
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Frequently asked questions about TAS-102

What is TAS-102 used for in colon adenocarcinoma?

TAS-102 is an investigational small molecule being studied for use in colon adenocarcinoma. It is currently in Phase 1 clinical development for this indication. The drug is being evaluated in patients with refractory minimal residual disease in colon adenocarcinomas, as part of an ongoing clinical trial.

Who is developing TAS-102?

TAS-102 is being developed by Natera, Inc., a company traded on the NASDAQ under the ticker symbol NTRA. The company is conducting a Phase 1 clinical trial of TAS-102 in patients with colon adenocarcinoma and colorectal cancer in the United States.

What phase is TAS-102 in?

TAS-102 is currently in Phase 1 clinical development. It is an investigational drug and has not been approved by regulatory authorities. The ongoing Phase 1 trial is recruiting patients with colon adenocarcinoma and colorectal cancer, with a target enrollment of 22 participants.

What clinical trials is TAS-102 in?

TAS-102 is being studied in a Phase 1 clinical trial registered as NCT04920032. The trial is titled 'Study of ctDNA Guided Change in Tx for Refractory Minimal Residual Disease in Colon Adenocarcinomas' and is currently recruiting patients in the United States. The study enrolls adults aged 18 years and older.

Is TAS-102 the same as any other drug?

TAS-102 is the drug name used in the clinical trial NCT04920032. No alternative names for this drug have been disclosed in the trial information. The drug is being investigated as a monotherapy in an uncontrolled, non-randomized, open-label study design for colon adenocarcinoma.