Association between autophagy and KRAS mutation with clinicopathological variables in colorectal cancer patients
Autophagy is a host defensive mechanism responsible for eliminating harmful cellular components through lysosomal degradation. Autophagy has been known to either promote or suppress various cancers including colorectal cancer (CRC). KRAS mutation serves as an important predictive marker for epiderm...
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| Format: | Article |
| Language: | English |
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College of Pathologists, Academy of Medicine Malaysia
2021
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| Online Access: | http://eprints.sunway.edu.my/1845/ http://eprints.sunway.edu.my/1845/1/Teow%20Sin%20Yeang%20Association%20between%20autophagy%20and%20kras%20mutation%20with%20clinicopathological%20variables%20in%20colorectal%20cancer%20patients.pdf |
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| author | Awi, Noel Jacques Yap, Hooi Yeen Subasri, A. Low, John Seng-Hooi Peh, Kaik-Boo Peh, Suat Cheng * Lee, C. S. Teow, Sin Yeang * |
| author_facet | Awi, Noel Jacques Yap, Hooi Yeen Subasri, A. Low, John Seng-Hooi Peh, Kaik-Boo Peh, Suat Cheng * Lee, C. S. Teow, Sin Yeang * |
| author_sort | Awi, Noel Jacques |
| building | SU Institutional Repository |
| collection | Online Access |
| description | Autophagy is a host defensive mechanism responsible for eliminating harmful cellular components through lysosomal degradation. Autophagy has been known to either promote or suppress various cancers including colorectal cancer (CRC). KRAS mutation serves as an important predictive marker for
epidermal growth factor receptor (EGFR)-targeted therapies in CRC. However, the relationship between autophagy and KRAS mutation in CRC is not well-studied. In this single-centre study, 92 formalin-fixed paraffin-embedded (FFPE) tissues of CRC patients (42 Malaysian Chinese and 50 Indonesian) were
collected and KRAS mutational status was determined by quantitative PCR (qPCR) (n=92) while the expression of autophagy effector (p62, LC3A and LC3B) was examined by immunohistochemistry (IHC) (n=48). The outcomes of each were then associated with the clinicopathological variables (n=48). Our findings demonstrated that the female CRC patients have a higher tendency in developing KRAS
mutation in the Malaysian Chinese population (p<0.05). Expression of autophagy effector LC3A was highly associated with the tumour grade in CRC (p<0.001) but not with other clinicopathological parameters. Lastly, the survival analysis did not yield a statistically significant outcome. Overall, this small cohort study concluded that KRAS mutation and autophagy effectors are not good prognostic
markers for CRC patients. |
| first_indexed | 2025-11-14T21:18:43Z |
| format | Article |
| id | sunway-1845 |
| institution | Sunway University |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T21:18:43Z |
| publishDate | 2021 |
| publisher | College of Pathologists, Academy of Medicine Malaysia |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | sunway-18452021-10-11T04:06:24Z http://eprints.sunway.edu.my/1845/ Association between autophagy and KRAS mutation with clinicopathological variables in colorectal cancer patients Awi, Noel Jacques Yap, Hooi Yeen Subasri, A. Low, John Seng-Hooi Peh, Kaik-Boo Peh, Suat Cheng * Lee, C. S. Teow, Sin Yeang * RC0254 Neoplasms. Tumors. Oncology (including Cancer) Autophagy is a host defensive mechanism responsible for eliminating harmful cellular components through lysosomal degradation. Autophagy has been known to either promote or suppress various cancers including colorectal cancer (CRC). KRAS mutation serves as an important predictive marker for epidermal growth factor receptor (EGFR)-targeted therapies in CRC. However, the relationship between autophagy and KRAS mutation in CRC is not well-studied. In this single-centre study, 92 formalin-fixed paraffin-embedded (FFPE) tissues of CRC patients (42 Malaysian Chinese and 50 Indonesian) were collected and KRAS mutational status was determined by quantitative PCR (qPCR) (n=92) while the expression of autophagy effector (p62, LC3A and LC3B) was examined by immunohistochemistry (IHC) (n=48). The outcomes of each were then associated with the clinicopathological variables (n=48). Our findings demonstrated that the female CRC patients have a higher tendency in developing KRAS mutation in the Malaysian Chinese population (p<0.05). Expression of autophagy effector LC3A was highly associated with the tumour grade in CRC (p<0.001) but not with other clinicopathological parameters. Lastly, the survival analysis did not yield a statistically significant outcome. Overall, this small cohort study concluded that KRAS mutation and autophagy effectors are not good prognostic markers for CRC patients. College of Pathologists, Academy of Medicine Malaysia 2021 Article PeerReviewed text en cc_by_nc_4 http://eprints.sunway.edu.my/1845/1/Teow%20Sin%20Yeang%20Association%20between%20autophagy%20and%20kras%20mutation%20with%20clinicopathological%20variables%20in%20colorectal%20cancer%20patients.pdf Awi, Noel Jacques and Yap, Hooi Yeen and Subasri, A. and Low, John Seng-Hooi and Peh, Kaik-Boo and Peh, Suat Cheng * and Lee, C. S. and Teow, Sin Yeang * (2021) Association between autophagy and KRAS mutation with clinicopathological variables in colorectal cancer patients. The Malaysian Journal of Pathology, 43 (2). pp. 269-279. ISSN 0126-8635 http://www.mjpath.org.my/index.php |
| spellingShingle | RC0254 Neoplasms. Tumors. Oncology (including Cancer) Awi, Noel Jacques Yap, Hooi Yeen Subasri, A. Low, John Seng-Hooi Peh, Kaik-Boo Peh, Suat Cheng * Lee, C. S. Teow, Sin Yeang * Association between autophagy and KRAS mutation with clinicopathological variables in colorectal cancer patients |
| title | Association between autophagy and KRAS mutation with
clinicopathological variables in colorectal cancer patients |
| title_full | Association between autophagy and KRAS mutation with
clinicopathological variables in colorectal cancer patients |
| title_fullStr | Association between autophagy and KRAS mutation with
clinicopathological variables in colorectal cancer patients |
| title_full_unstemmed | Association between autophagy and KRAS mutation with
clinicopathological variables in colorectal cancer patients |
| title_short | Association between autophagy and KRAS mutation with
clinicopathological variables in colorectal cancer patients |
| title_sort | association between autophagy and kras mutation with
clinicopathological variables in colorectal cancer patients |
| topic | RC0254 Neoplasms. Tumors. Oncology (including Cancer) |
| url | http://eprints.sunway.edu.my/1845/ http://eprints.sunway.edu.my/1845/ http://eprints.sunway.edu.my/1845/1/Teow%20Sin%20Yeang%20Association%20between%20autophagy%20and%20kras%20mutation%20with%20clinicopathological%20variables%20in%20colorectal%20cancer%20patients.pdf |