ClinicalTrials.gg
RecruitingNCT07536113RealCHALLENGEUpdated Apr 17, 2026

Assessing the Efficacy and Safety of ctDNA-driven Selection for Anti-EGFR Retreatment in a Real World Metastatic Colorectal Cancer Patients Cohort (the REalCHALLENGE Study)

An observational study in Metastatic Colorectal Cancer (CRC), sponsored by Niguarda Hospital. Recruiting at 1 site in Italy. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-04-17.

Sponsored by Niguarda Hospital · Observational

From the registry’s dates

  • Primary completion was expected by May 2026, 6 months ago, but the record still lists the study as recruiting.
  • Started Mar 2024; still recruiting 2 years 8 months later.
Study type
Observational
Model
Other
Time perspective
Retrospective
Enrollment
250
Ages
18 Years and older
Sex
All
01

Study summary

This is an observational, retrospective, international and multicenter study funded by Fondazione Oncologia Niguarda ETS to assess the efficacy of anti-EGFR rechallenge regimens in the largest real-world cohort of MSS mCRC patients screened for RAS/BRAF/PIK3CA ctDNA status on liquid biopsy within the MEN1611-02 C-PRECISE-01 trial. The study will collect molecular, clinical and outcome data of patients already available at participating centers.

Read the detailed description

Patient's data to be collected include: age, gender, ethnicity; Eastern Cooperative Oncology Group scale performance status (ECOGPS); date of first diagnosis and date of advanced CRC diagnosis; primary tumor histology; timing of collection of FFPE and liquid biopsy samples; molecular profile data both from archival solid tissue and liquid biopsy; number and sites of metastasis at the time of liquid biopsy draw; medical treatment regimens, lines and locoregional approaches pursued, focusing on the first treatment received by patients following ctDNA analysis; date of death or last follow up. Response evaluation to therapies have to be assessed according to Response Evaluation Criteria in solid tumors (RECIST v1.1) criteria. Information will be provided about resposne to standard treatments (RR and DCR), duration of response (DOR), progression-free survival (PFS), time-to-treatment failure (TTF), OS.

02

Conditions studied

  • Metastatic Colorectal Cancer (CRC)

Keywords

  • liquid biopsy
  • mCRC
  • rechallenge therapies
  • Anti-EGFR
03

In context

Colorectal Neoplasms

6,541 studies on the registry are indexed under Colorectal Neoplasms; 1,667 are open to participants now.

This study's planned enrollment of 250 is close to the median of 250 across 1,440 observational studies indexed under Colorectal Neoplasms.

Browse Colorectal Neoplasms studies →

Lead sponsor

Niguarda Hospital is the lead sponsor of 68 studies on the registry; 29 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

Patients diagnosed with MSS RAS and BRAF wild-type (on solid tissue) mCRC

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  1. Patients diagnosed with MSS RAS and BRAF wild-type (on solid tissue) mCRC and screened by ctDNA within the MEN1611-02 clinical trial;
  2. signature from alive patient;
  3. Availability of clinical data detailing the outcome to the first treatment received by patients following the blood draw for ctDNA analysis performed as per screening procedures within the MEN1611-02 clinical trial;
  4. Signed informed consent for molecular screening within the MEN1611-02 clinical trial.
  5. Age ≥ 18.

Exclusion criteria

Exclusion criteria

  1. No data available detailing the outcome to the first treatment received by patients following the blood draw for ctDNA analysis performed as per screening procedures within the MEN1611-02 clinical trial.
  2. Patients enrolled and treated within the MEN1611-02 clinical trial.
Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

05

Study design

Observational model
Other
Time perspective
Retrospective
Enrollment
250 participants (estimated)
Patient registry
No

Groups and cohorts

  • mCRC patients

    Patients diagnosed with mCRC and screened by ctDNA within the MEN1611-02 clinical trial.

06

What researchers measure

Primary outcomes

  1. Efficacy anti-EGFR rechallenge

    The study aims primarily at assessing the efficacy of anti-EGFR rechallenge in the largest real-world cohort of MSS mCRC patients according to RAS/BRAF/PIK3CA ctDNA status taking advantage from the liquid biopsy screening performed as per MEN1611-02 C-PRECISE-01 trial.

    Time frame: Up to two years

07

Study locations

1 of 1 sites recruiting
08

References and documents

Individual participant data

Plan to share: Undecided — not yet decided

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Started Mar 2024 (actual). Primary completion is estimated for May 2026, 26 months after the start.

How these figures are worked out, and which studies are left out of them.

Registered
Mar 8, 2026
First posted
Apr 17, 2026
StartActual
Mar 1, 2024
Primary completionEst.
May 1, 2026
CompletionEst.
Sep 1, 2026
Last update
Apr 17, 2026
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Apr 17, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT07536113
Lead sponsor
Niguarda Hospital
Responsible party
Sponsor
First posted
Apr 17, 2026
Start date
Mar 1, 2024
Primary completion
May 1, 2026 (estimated)
Completion
Sep 1, 2026 (estimated)
Last update
Apr 17, 2026

Study contacts

Salvatore Siena, MD
Contact
salvatore.siena@ospedaleniguarda.it
+39026444 ext. 3695
Salvatore Siena, MD
principal investigator · ASST Niguarda Hospital

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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