Skip to content

Cancer Risk Assessment in Patients With a Constitutional Alteration of the PTEN Gene

National Cohort of Patients With Cowden's Disease and With a Constitutional Alteration of the PTEN Gene for the Prospective Assessment of the Risk of Cancer.

Status
Suspended
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT05630105
Acronym
COCO
Enrollment
430
Registered
2022-11-29
Start date
2023-06-12
Completion date
2048-01-01
Last updated
2026-05-15

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

PTEN Gene Mutation

Keywords

PTEN gene mutation, risk of cancer occurence

Brief summary

This is a multicentric, observational, retrospective and prospective study, aiming to estimate the risk of cancer occurrence in subjects carrying a PTEN mutation, based on the constitution of a national cohort.

Detailed description

After collection of the non objection and verification of the eligibility criteria, a first clinical questionnaire will be completed by the participant and the prescribing physician to collect the main medical events including the history of malignant tumor pathologies until the date of inclusion in the study. Thereafter, an annual questionnaire will be sent to the participants to update the elements related to a tumor pathology. For the case of patients who have died or been lost to follow-up, only the information from the first clinical questionnaire will be collected from the data available from the prescribing physician without informing the relatives. However, the investigating center will have to check that these patients have not objected, during their lifetime, to the use of their data.

Interventions

None listed

Sponsors

Institut Bergonié
Lead SponsorOTHER

Study design

Observational model
COHORT
Time perspective
CROSS_SECTIONAL

Eligibility

Sex/Gender
ALL
Healthy volunteers
No

Inclusion criteria

1. Male or female. 2. Adult or child without age limit. 3. Carrier of a constitutional or mosaic alteration of the PTEN gene established and/or confirmed by the Institut Bergonié's genetics laboratory, following a request for molecular diagnosis made between 1997 and 2027. 4. Participant informed of his genetic diagnosis. 5. Participant informed and not having expressed non-opposition to participate in the research. 6. Participant affiliated to a French social security system in accordance with French law on research involving the human person.

Exclusion criteria

1. Participant under guardianship or curatorship. Exception: a participant with autism may be included in the study. 2. Persons deprived of their liberty by a judicial or administrative decision. 3. Persons under psychiatric care, persons admitted to a health or social establishment for purposes other than research; Exception: a participant with autism may be included in the study.

Design outcomes

Primary

MeasureTime frameDescription
Number of subjects with a cancer eventFrom date of identification of a constitutional alteration of the PTEN gene until the date of first cancer event or date of death from any cause, whichever came first, assessed up to 20 years.Number of subjects with a cancer event (any cancer) observed in the population of subjects presenting a constitutional alteration of the PTEN gene.

Secondary

MeasureTime frameDescription
Number of subjects with a breast cancer eventFrom date of identification of a constitutional alteration of the PTEN gene until the date of first breast cancer event or date of death from any cause, whichever came first, assessed up to 20 years.Number of subjects with a breast cancer event (any cancer) observed in the population of subjects presenting a constitutional alteration of the PTEN gene.
Number of subjects with a thyroid cancer eventFrom date of identification of a constitutional alteration of the PTEN gene until the date of first thyroid cancer event or date of death from any cause, whichever came first, assessed up to 20 years.Number of subjects with a thyroid cancer event (any cancer) observed in the population of subjects presenting a constitutional alteration of the PTEN gene.
Number of subjects with an endometrial cancer eventFrom date of identification of a constitutional alteration of the PTEN gene until the date of first endometrial cancer event or date of death from any cause, whichever came first, assessed up to 20 years.Number of subjects with an endometrial cancer event (any cancer) observed in the population of subjects presenting a constitutional alteration of the PTEN gene.
Number of subjects with a renal cancer eventFrom date of identification of a constitutional alteration of the PTEN gene until the date of first renal cancer event or date of death from any cause, whichever came first, assessed up to 20 years.Number of subjects with a renal cancer event (any cancer) observed in the population of subjects presenting a constitutional alteration of the PTEN gene.
Number of subjects with a colorectal cancer eventFrom date of identification of a constitutional alteration of the PTEN gene until the date of first colorectal cancer event or date of death from any cause, whichever came first, assessed up to 20 years.Number of subjects with a colorectal cancer event (any cancer) observed in the population of subjects presenting a constitutional alteration of the PTEN gene.
Number of subjects with a melanoma cancer eventFrom date of identification of a constitutional alteration of the PTEN gene until the date of first melanoma cancer event or date of death from any cause, whichever came first, assessed up to 20 years.Number of subjects with a melanoma cancer event (any cancer) observed in the population of subjects presenting a constitutional alteration of the PTEN gene.

Countries

France

Contacts

PRINCIPAL_INVESTIGATORVirginie BUBIEN, Dr

Institut Bergonié

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: May 16, 2026