Clinical trial Recruiting at 1 site Observational Ages 18 and up

High-precision detection of leftover cancer using a liquid-biopsy platform (SHERLOCK)

Official title: Study of High-Precision Evaluation of Molecular ResiduaL Disease Through a PlatfOrm for Cancer TracKing and Interception (SHERLOCK)

Run by University Health Network, Toronto · NCT07524114 · Data updated 2026-11-12

This project will test whether sensitive blood and other fluid tests for circulating tumor DNA can find leftover cancer (minimal residual disease) in adults treated with curative intent for breast, lung, melanoma, gynecologic, or genitourinary cancers.

Quick facts

Study typeObservational
Ages18 Years and up
SexAll
Enrollment7000 (estimated)
SponsorUniversity Health Network, Toronto
Academic / other
Drugs / interventionsbevacizumab, chemotherapy, immunotherapy, radiation
Locations1 site (Toronto, Ontario)
StatusRecruiting
StartedMarch 31, 2026
Main results expectedMarch 31, 2031
Study endsMarch 31, 2031
Registry record updatedAugust 21, 2026
Trial IDNCT07524114 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adults (≥18) with confirmed cancer who have undergone or are planned for curative-intent treatment within the past 12 months, including breast, lung, melanoma, gynecologic, or genitourinary cancers, and who can provide informed consent are ideal candidates.

Probably not a fit

Patients with unresectable or widely metastatic disease not treated with curative intent, those more than 12 months beyond curative-intent treatment without concern for MRD, or those unable to attend required follow-up are unlikely to benefit from this platform.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

The platform collects and sequences biospecimens (blood, tissue, urine, saliva, and surgical drainage) and links those molecular results to imaging and clinical data to detect minimal/molecular residual disease (MRD). Clinical annotation captures patient and disease characteristics, treatments, and outcomes to contextualize ctDNA findings. Patients who are MRD positive may be referred to separate interception treatment trials, while serial blood and imaging are used to monitor MRD clearance and correlate with relapse. Exploratory correlative analyses aim to improve sensitivity and interpretation of ctDNA-based MRD across multiple tumor types.

Why it matters

Potential benefit: If successful, this could enable earlier detection of relapse and guide preventive treatments to extend relapse-free survival.

How similar studies have gone: Similar ctDNA-based MRD approaches have shown promising but still emerging results in some cancers (for example colorectal and lung), though broad validation across tumor types remains ongoing.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

1. Patients with histopathological confirmation of cancer. Patients whose diagnosis are made by cytology may also be considered for this study. For tumor types that are typically diagnosed using unequivocal imaging findings or biomarker profiles (e.g. hepatocellular cancer, uveal melanoma), they can be eligible without histopathological or cytological confirmation.
2. Patients must have cancer that is planned for or has undergone curative intent treatment (e.g. surgery, definitive radiation, definitive chemoradiation, adjuvant radiation, adjuvant chemotherapy, adjuvant chemoradiation, etc). Curative intent treatment must be completed within 12 months of study entry. For patients on adjuvant/maintenance endocrine or biological therapy (e.g. bevacizumab, immunotherapy, etc), enrollment within 12 months of completion of curative intent treatment is allowed.
3. Patient must be ≥ 18 years old.
4. All patients must have signed and dated an informed consent form.

Exclusion Criteria:

1\. History of another active invasive cancer within 2 years prior to study enrolment. Exceptions include squamous and basal cell carcinoma of the skin and carcinoma in situ of the cervix, or malignancy that in the opinion of the investigator, is considered cured with minimal risk of recurrence within 2 years.

Where it's running

  • Princess Margaret Hospital
    Toronto, Ontario, Canada
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.