Hot Paper in Biology

May 2014
“Comprehensive molecular portraits of human breast tumours,” by the Cancer Genome Atlas Network (D.C. Koboldt, et al.), Nature, 490(7418): 61-70, 4 October 2012.

Abstract: “We analysed primary breast cancers by genomic DNA copy number arrays, DNA methylation, exome sequencing, messenger RNA arrays, microRNA sequencing and reverse-phase protein arrays. Our ability to integrate information across platforms provided key insights into previously defined gene expression subtypes and demonstrated the existence of four main breast cancer classes when combining data from five platforms, each of which shows significant molecular heterogeneity. Somatic mutations in only three genes (TP53, PIK3CA and GATA3) occurred at >10% incidence across all breast cancers; however, there were numerous subtype-associated and novel gene mutations including the enrichment of specific mutations in GATA3, PIK3CA and MAP3K1 with the luminal A subtype. We identified two novel protein-expression-defined subgroups, possibly produced by stromal/microenvironmental elements, and integrated analyses identified specific signalling pathways dominant in each molecular subtype including a HER2/phosphorylated HER2/EGFR/phosphorylated EGFR signature within the HER2-enriched expression subtype. Comparison of basal-like breast tumours with high-grade serous ovarian tumours showed many molecular commonalities, indicating a related aetiology and similar therapeutic opportunities. The biological finding of the four main breast cancer subtypes caused by different subsets of genetic and epigenetic abnormalities raises the hypothesis that much of the clinically observable plasticity and heterogeneity occurs within, and not across, these major biological subtypes of breast cancer.”

This 2012 report from Nature was cited 40 times in current journal articles indexed by Thomson Reuters during November-December 2013. Only two other biology papers published in the last two years, aside from reviews, garnered higher numbers of citations during that two-month period. Prior to the most recent count, citations to the report have accrued as follows, as tracked by Essential Science Indicators Hot Papers:

September-October 2013: 95 citations
July-August 2013: 50
May-June 2013: 48
March-April 2013: 29
January-February 2013: 47
November-December 2012: 10

Total citations to date: 319

SOURCE: Thomson Reuters Web of Science

The data and citation records included in this report are from Thomson Reuters Web of ScienceTM. Web of ScienceTM is a registered trademark of Thomson Reuters. All rights reserved.