Journal article

Decoding transcriptomic intra-tumour heterogeneity to guide personalised medicine in ovarian cancer

Tuan Zea Tan, Valerie Heong, Jieru Ye, Diana Lim, Jeffrey Low, Mahesh Choolani, Clare Scott, David Shao Peng Tan, Ruby Yun-Ju Huang



The evaluation of intra-tumour heterogeneity (ITH) from a transcriptomic point of view is limited. Single-cell cancer studies reveal significant genomic and transcriptomic ITH within a tumour and it is no longer adequate to employ single-subtype assignment as this does not acknowledge the ITH that exists. Molecular assessment of subtype heterogeneity (MASH) was developed to comprehensively report on the composition of all transcriptomic subtypes within a tumour lesion. Using MASH on 3431 ovarian cancer samples, correlation and association analyses with survival, metastasis and clinical outcomes were performed to assess the impact of subtype composition as a surrogate for ITH. The association..

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