Spots Global Cancer Trial Database for Somatic Mosaicism in Twins Discordant for Childhood Cancer

The following info and data is provided "as is" to help patients around the globe.
We do not endorse or review these studies in any way.

Trial Identification

Brief Title: Somatic Mosaicism in Twins Discordant for Childhood Cancer

Official Title: Somatic Mosaicism in Twins Discordant for Childhood Cancer: a Pilot Study

Study ID: NCT06054295

Conditions

Pediatric Central Nervous System Tumor

Central Nervous System Tumor

Discordant Twin

Somatic Mutation

Interventions

Biospecimen collection

Questionnaire Administration

Study Description

Brief Summary: Somatic mosaicism in cancer associated genes is one potential explanation for discordance in childhood cancer that has not been fully explored to date. This pilot study will focus on twins with central nervous system (CNS) tumors who are identified through the Children's Oncology Group's Project: EveryChild (PEC) registry or volunteer.

Detailed Description: PRIMARY OBJECTIVES: I. To conduct a descriptive study of same sex twins (MZ and DZ) discordant for childhood CNS tumors identified through the Children's Oncology Group Project:EveryChild registry. II. To compare the prevalence of somatic mosaicism in classic cancer-associated genes in monozygotic (MZ) twins discordant for childhood brain tumors. In our pilot study, we will sequence blood and saliva DNA samples from 25 MZ twin pairs using a panel of 94 known cancer associated genes. SECONDARY OBJECTIVES: I. To compare the profile of mutations detected in DNA extracted from pre- and post-treatment blood samples from a subset of CNS tumor patients. The purpose of this aim is to ensure that differences in somatic mosaicism detected in twin pairs are not caused by cancer therapy. Outline: Twins with CNS tumors will undergo blood and saliva DNA samples with the goal is to learn more about genetic differences that may lead to CNS tumor development.