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Nat Commun. 2021 Nov 24;12(1):6821. doi: 10.1038/s41467-021-27106-w.

Molecular and phenotypic profiling of colorectal cancer patients in West Africa reveals biological insights.

Nature communications

Olusegun Isaac Alatise, Gregory C Knapp, Avinash Sharma, Walid K Chatila, Olukayode A Arowolo, Olalekan Olasehinde, Olusola C Famurewa, Adeleye D Omisore, Akinwumi O Komolafe, Olaejinrinde O Olaofe, Aba I Katung, David E Ibikunle, Adedeji A Egberongbe, Samuel A Olatoke, Sulaiman O Agodirin, Olusola A Adesiyun, Ademola Adeyeye, Oladapo A Kolawole, Akinwumi O Olakanmi, Kanika Arora, Jeremy Constable, Ronak Shah, Azfar Basunia, Brooke Sylvester, Chao Wu, Martin R Weiser, Ken Seier, Mithat Gonen, Zsofia K Stadler, Yelena Kemel, Efsevia Vakiani, Michael F Berger, Timothy A Chan, David B Solit, Jinru Shia, Francisco Sanchez-Vega, Nikolaus Schultz, Murray Brennan, J Joshua Smith, T Peter Kingham

Affiliations

  1. Faculty of Clinical Sciences, College of Health Sciences, Obafemi Awolowo University, Ile-Ife, Nigeria.
  2. Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY, USA.
  3. Division of General Surgery, Department of Surgery, Dalhousie University, Halifax, NS, Canada.
  4. Marie-Jose and Henry R. Kravis Center for Molecular Oncology, Memorial Sloan Kettering Cancer Center, New York, NY, USA.
  5. Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA.
  6. Tri-Institutional Program in Computational Biology and Medicine, Weill Cornell Medical College, New York, NY, USA.
  7. Federal Medical Centre, Owo, Ondo State, Nigeria.
  8. Department of Surgery, University of Ilorin Teaching Hospital, Ilorin, Nigeria.
  9. Department of Surgery, Ladoke Akintola University of Technology, Ogbomoso, Oyo State, Nigeria.
  10. Department of Surgery, University of Medical Sciences, Ondo, Ondo State, Nigeria.
  11. Colorectal Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY, USA.
  12. Department of Epidemiology and Biostatistics, Memorial Sloan Kettering Cancer Center, New York, NY, USA.
  13. Clinical Genetics Service and the Cancer Biology and Genetics Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA.
  14. Gastrointestinal Oncology Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA.
  15. Niehaus Center for Inherited Cancer Genomics, Memorial Sloan Kettering Cancer Center, New York, NY, USA.
  16. Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, New York, NY, USA.
  17. Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, NY, USA.
  18. Bobst International Center, Memorial Sloan Kettering Cancer Center, New York, NY, USA.
  19. Hepatopancreatobiliary Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY, USA. [email protected].

PMID: 34819518 PMCID: PMC8613248 DOI: 10.1038/s41467-021-27106-w

Abstract

Understanding the molecular and phenotypic profile of colorectal cancer (CRC) in West Africa is vital to addressing the regions rising burden of disease. Tissue from unselected Nigerian patients was analyzed with a multigene, next-generation sequencing assay. The rate of microsatellite instability is significantly higher among Nigerian CRC patients (28.1%) than patients from The Cancer Genome Atlas (TCGA, 14.2%) and Memorial Sloan Kettering Cancer Center (MSKCC, 8.5%, P < 0.001). In microsatellite-stable cases, tumors from Nigerian patients are less likely to have APC mutations (39.1% vs. 76.0% MSKCC P < 0.001) and WNT pathway alterations (47.8% vs. 81.9% MSKCC, P < 0.001); whereas RAS pathway alteration is more prevalent (76.1% vs. 59.6%, P = 0.03). Nigerian CRC patients are also younger and more likely to present with rectal disease (50.8% vs. 33.7% MSKCC, P < 0.001). The findings suggest a unique biology of CRC in Nigeria, which emphasizes the need for regional data to guide diagnostic and treatment approaches for patients in West Africa.

© 2021. The Author(s).

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