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Genetics of Appendix Cancer Study

Genetics of Appendix Cancer: The GAP Study

Status
Recruiting
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT05734430
Acronym
GAP
Enrollment
700
Registered
2023-02-21
Start date
2022-11-11
Completion date
2034-11-30
Last updated
2025-04-18

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

Conditions

Appendiceal Adenocarcinoma, Appendiceal Cancer, Appendiceal Carcinoid Tumor, Appendiceal Mucinous Neoplasm, Appendiceal Neoplasm Malignant Secondary, Appendiceal Neoplasms, Appendix Adenocarcinoma, Appendix Cancer, Appendix Cancer Metastatic, Appendix Mucinous Neoplasm, Appendix NET, Appendix Tumor, High Grade Appendix Mucinous Adenocarcinoma, High Grade Appendix Mucinous Neoplasm, Low-Grade Appendix Mucinous Neoplasm

Keywords

Genetics

Brief summary

The GAP Study is a prospective cohort study designed to comprehensively investigate genetic variations that may contribute to cancer development among individuals diagnosed with appendix/appendiceal cancer who are ages 18+ years.

Detailed description

The Genetics of Appendix Cancer (GAP) Study aims to analyze hereditary factors, tumor characteristics and clinical features/outcomes among adults diagnosed with appendix cancer and their biological parents. Patients are recruited at any time after a diagnosis of appendix cancer and followed for up to 6 years after study enrollment. This cohort is enriched by robust biospecimens and data collections.

Interventions

Whole exome sequencing

OTHERRetrospective tissue procurement

Collection of archived fixed-formalin, paraffin-embedded (FFPE) primary appendix tumor tissues that were previously removed

Sponsors

Andreana Holowatyj, PhD, MSCI
Lead SponsorOTHER

Study design

Observational model
COHORT
Time perspective
PROSPECTIVE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
Yes

Inclusion criteria

GAP Social * Known diagnosis of appendix cancer in the United States * Mentally and physically able to consent and participate in the study GAP Vanderbilt * Known diagnosis of appendix cancer * Diagnosed by and/or consulting with a physician/clinical provider participating in the GAP Study * Mentally and physically able to consent and participate in the study GAP Parent * Biological parents (mother and/or father) of individuals actively participating in the GAP Study * Residing in the United States * Mentally and physically able to consent and participate in the study

Exclusion criteria

* Women pregnant at the time of consent * Prisoners * Unable to provide informed consent * Unable to read, write, or complete questionnaires in English

Design outcomes

Primary

MeasureTime frame
Prevalence and spectrum of pathogenic and likely pathogenic germline variants in appendix cancer patients and their biological parentsWithin 6 years of study enrollment

Secondary

MeasureTime frame
Association of germline genetic variants with clinical, pathologic and molecular features of appendix tumorsWithin 6 years of study enrollment

Countries

United States

Contacts

Primary ContactGAP Study Coordinator (Rebecca B.)
gapcancerstudy@vumc.org615-936-8544

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026