Application of Multigene Panel Testing in Patients With High Risk for Hereditary Colorectal Cancer: A Descriptive Report Focused on Genotype-Phenotype Correlation. Issue 6 (3rd May 2022)
- Record Type:
- Journal Article
- Title:
- Application of Multigene Panel Testing in Patients With High Risk for Hereditary Colorectal Cancer: A Descriptive Report Focused on Genotype-Phenotype Correlation. Issue 6 (3rd May 2022)
- Main Title:
- Application of Multigene Panel Testing in Patients With High Risk for Hereditary Colorectal Cancer: A Descriptive Report Focused on Genotype-Phenotype Correlation
- Authors:
- Park, Ji Soo
Park, Jung Won
Shin, Saeam
Lee, Seung-Tae
Shin, Sang Joon
Min, Byung Soh
Park, Soo Jung
Park, Jae Jun
Cheon, Jae Hee
Kim, Won Ho
Kim, Tae Il - Abstract:
- Abstract : BACKGROUND: The genetic test solely based on the clinical features of hereditary colorectal cancer has limitations in clinical practice. OBJECTIVE: This study aimed to analyze the results of comprehensive multigene panel tests based on clinical findings. DESIGN: This was a cross-sectional study based on a prospectively compiled database. SETTING: The study was conducted at a tertiary hospital. PATIENTS: A total of 381 patients with high risk for hereditary colorectal cancer syndromes were enrolled between March 2014 and December 2019. MAIN OUTCOME MEASURES: The primary outcome was to describe the mutational spectrum based on genotype-phenotype concordance and discordance. RESULTS: Germline mutations were identified in 89 patients for polyposis hereditary colorectal cancer genes (76 in APC ; 4 in PTEN ; 4 in STK11 ; 3 in BMPR1A ; 1 in POLE ; 1 in POLD1 ), 89 patients for nonpolyposis hereditary colorectal cancer genes (41 in MLH1 ; 40 in MSH2 ; 6 in MSH6 ; and 2 in PMS2 ), and 12 patients for other cancer predisposition genes (1 in ATM ; 2 in BRCA1 ; 1 in BRCA2 ; 1 in BRIP1 ; 1 in MLH3 ; 1 in NBN ; 1 in PMS1 ; 1 in PTCH1 ; 1 in TP53 ; and 2 in monoallelic MUTYH ). If we had used direct sequencing tests of 1 or 2 major genes based on phenotype, 48 (25.3%) of 190 mutations would not have been detected due to technical differences (12.1%), less frequent genotype (4.2%), unclear phenotype (3.7%), and genotype-phenotype discordance (4.7%). The genotype-phenotypeAbstract : BACKGROUND: The genetic test solely based on the clinical features of hereditary colorectal cancer has limitations in clinical practice. OBJECTIVE: This study aimed to analyze the results of comprehensive multigene panel tests based on clinical findings. DESIGN: This was a cross-sectional study based on a prospectively compiled database. SETTING: The study was conducted at a tertiary hospital. PATIENTS: A total of 381 patients with high risk for hereditary colorectal cancer syndromes were enrolled between March 2014 and December 2019. MAIN OUTCOME MEASURES: The primary outcome was to describe the mutational spectrum based on genotype-phenotype concordance and discordance. RESULTS: Germline mutations were identified in 89 patients for polyposis hereditary colorectal cancer genes (76 in APC ; 4 in PTEN ; 4 in STK11 ; 3 in BMPR1A ; 1 in POLE ; 1 in POLD1 ), 89 patients for nonpolyposis hereditary colorectal cancer genes (41 in MLH1 ; 40 in MSH2 ; 6 in MSH6 ; and 2 in PMS2 ), and 12 patients for other cancer predisposition genes (1 in ATM ; 2 in BRCA1 ; 1 in BRCA2 ; 1 in BRIP1 ; 1 in MLH3 ; 1 in NBN ; 1 in PMS1 ; 1 in PTCH1 ; 1 in TP53 ; and 2 in monoallelic MUTYH ). If we had used direct sequencing tests of 1 or 2 major genes based on phenotype, 48 (25.3%) of 190 mutations would not have been detected due to technical differences (12.1%), less frequent genotype (4.2%), unclear phenotype (3.7%), and genotype-phenotype discordance (4.7%). The genotype-phenotype discordance is probably linked to compound heterozygote, less distinctive phenotype, and insufficient information for colorectal cancer risk. LIMITATIONS: This study included a small number of patients with insufficient follow-up duration. CONCLUSIONS: A comprehensive multigene panel is expected to identify more genetic mutations than phenotype-based direct sequencing, with special utility for unclear phenotype or genotype-phenotype discordance. See Video Abstract at http://links.lww.com/DCR/B844 . APLICACIÓN DE PRUEBAS DE PANEL MULTIGÉNICO EN PACIENTES CON ALTO RIESGO DE CÁNCER COLORRECTAL HEREDITARIO: INFORME DESCRIPTIVO ENFOCADO EN LA CORRELACIÓN GENOTIPO-FENOTIPO: ANTECEDENTES: La prueba genética basada únicamente en la característica clínica del cáncer colorrectal hereditario tiene limitaciones en la práctica clínica. OBJETIVO: Este estudio tuvo como objetivo analizar el resultado de pruebas integrales de panel multigénico basadas en hallazgos clínicos. DISEÑO: Este fue un estudio transversal basado en una base de datos recopilada prospectivamente. AJUSTE: El estudio se realizó en un hospital terciario. PACIENTES: Se inscribió un total de 381 pacientes con alto riesgo de síndromes de cáncer colorrectal hereditario entre marzo del 2014 y diciembre del 2019. PRINCIPALES MEDIDAS DE RESULTADO: El resultado principal fue describir el espectro mutacional basado en la concordancia y discordancia genotipo-fenotipo. RESULTADOS: Se identificaron mutaciones de la línea germinal en 89 pacientes para genes de cáncer colorrectal hereditario con poliposis (76 en APC; 4 en PTEN; 4 en STK11; 3 en BMPR1A; 1 en POLE; 1 en POLD1), 89 pacientes para genes de CCR hereditario sin poliposis (41 en MLH1; 40 en MSH2; 6 en MSH6; y 2 en PMS2) y 12 pacientes por otro gen de predisposición al cáncer (1 en ATM; 2 en BRCA1; 1 en BRCA2; 1 en BRIP1; 1 en MLH3; 1 en NBN; 1 en PMS1; 1 en PTCH1; 1 en TP53; y 2 en MUTYH monoalélico). Si hubiéramos utilizado pruebas de secuenciación directa de uno o dos genes principales basados en el fenotipo, 48 (25, 3%) de 190 mutaciones no se habrían detectado debido a diferencias técnicas (12, 1%), genotipo menos frecuente (4, 2%), fenotipo poco claro (3, 7%) y discordancia genotipo-fenotipo (4, 7%). La discordancia genotipo-fenotipo probablemente esté relacionada con el heterocigoto compuesto, el fenotipo menos distintivo y la información insuficiente para el riesgo de cáncer colorrectal. LIMITACIONES: Este estudio incluyó una pequeña cantidad de pacientes con una duración de seguimiento insuficiente. CONCLUSIONES: Se espera que un panel multigénico completo identifique más mutaciones genéticas que la secuenciación directa basada en el fenotipo, con especial utilidad para la discordancia de fenotipo o genotipo-fenotipo poco clara. Consulte Video Resumen en http://links.lww.com/DCR/B844 . Traducción— Dr. Francisco M. Abarca-Rendon ) … (more)
- Is Part Of:
- Diseases of the colon & rectum. Volume 65:Issue 6(2022)
- Journal:
- Diseases of the colon & rectum
- Issue:
- Volume 65:Issue 6(2022)
- Issue Display:
- Volume 65, Issue 6 (2022)
- Year:
- 2022
- Volume:
- 65
- Issue:
- 6
- Issue Sort Value:
- 2022-0065-0006-0000
- Page Start:
- 793
- Page End:
- 803
- Publication Date:
- 2022-05-03
- Subjects:
- Colorectal polyposis -- Genotype-phenotype correlation -- Hereditary colorectal cancer syndrome -- Multigene panel testing
Colon (Anatomy) -- Diseases -- Periodicals
Rectum -- Diseases -- Periodicals
Colonic Diseases -- Periodicals
Colorectal Surgery -- Periodicals
616.34 - Journal URLs:
- http://journals.lww.com/dcrjournal/Pages/default.aspx ↗
http://journals.lww.com ↗ - DOI:
- 10.1097/DCR.0000000000002039 ↗
- Languages:
- English
- ISSNs:
- 0012-3706
- Deposit Type:
- Legaldeposit
- View Content:
- Available online (eLD content is only available in our Reading Rooms) ↗
- Physical Locations:
- British Library DSC - 3598.200000
British Library DSC - BLDSS-3PM
British Library STI - ELD Digital store - Ingest File:
- 21555.xml