American Association for Cancer Research
Browse

Figure 3 from Genomic Landscapes of Endometrioid and Mucinous Ovarian Cancers and Morphologically Similar Tumor Types

Download (2.48 MB)
figure
posted on 2025-11-05, 07:01 authored by Dorothy Hallberg, Alice C. Eastman, Shashikant Koul, Daniel C. Bruhm, Eniko Papp, Simon Davenport, Vilmos Adleff, Leonardo Ferreira, Noushin Niknafs, Jamie E. Medina, Stephen Cristiano, Carolyn Hruban, Jacob Fiksel, Kaui P. Lebarbenchon, Luis Aparicio, Nicholas A. Vulpescu, Kuan-Ting Kuo, Nita Ahuja, Ronny Drapkin, Euihye Jung, Sarah H. Kim, Mark A. Eckert, Ernst Lengyel, Kentaro Nakayama, Ayse Ayhan, Ie-Ming Shih, Tian-Li Wang, Ofer Lavie, Gad Rennert, Hariharan Easwaran, Stephen B. Baylin, Michael F. Press, Victor E. Velculescu, Robert B. Scharpf
<p>WGS analyses of linked amplicons and rearrangements. <b>A,</b> Circos plots for linked amplicons for individual tumor samples with >100 structural variants. Circos plots depict copy number alterations as well as intra- and inter-chromosomal rearrangements. Segmented normalized estimates of read depth were used to identify candidate focal amplifications (teal) and focal deletions (red). Rearranged read pairs and split reads were used to identify inter- and intra-chromosomal rearrangements (blue). <b>B,</b> For linked amplicon graphs, nodes represent genes, node size represents the number of times the segment is represented in the genome, color indicates the chromosome location of the amplified segment, and edges denote segments that are connected in the rearranged cancer genome. Known driver genes indicated by triangles are often hubs in these networks, suggesting that amplification of these genes occurs early and can be connected to many of the other amplicons. <b>C,</b> Reads aligned to the fusion junction of two representative rearrangements. Split reads that span the fusion junction are shown in black, whereas read pairs that reside on either side of the junction are shown in green and blue, providing additional evidence for specific rearrangements.</p>

Funding

Dr. Miriam and Sheldon G. Adelson Medical Research Foundation (AMRF)

Gray Foundation

National Institutes of Health (NIH)

Commonwealth Foundation for Cancer Research Foundation

U.S. Department of Defense (DOD)

Honorable Tina Brozman Foundation (Tina’s Wish)

Stand Up To Cancer (SU2C)

National Institute of General Medical Sciences (NIGMS)

United States Department of Health and Human Services

Find out more...

History

ARTICLE ABSTRACT

Endometrioid and mucinous ovarian carcinomas represent nearly a fifth of ovarian cancers, but their molecular characteristics and pathologic origins are poorly understood. To identify the genomic and epigenomic alterations characteristic of these ovarian cancer subtypes and evaluate links to morphologically similar tumors from other sites, we performed a combination of sequence, copy number, mutation signature, and rearrangement analyses from tumor samples and matched normal tissues of 133 patients, as well as methylation analyses of these tumors and tissues of 150 patients from The Cancer Genome Atlas. Genomic analyses included samples from patients with ovarian endometrioid (n = 44), ovarian mucinous (n = 43), uterine endometrioid (n = 15), and gastrointestinal mucinous carcinomas (n = 31), including mucinous carcinomas of the stomach, colon, and pancreas. In addition to identifying genes previously known to be involved in these tumors, we identified alterations in RAD51C, NOTCH4, SMARCA1/4, and JAK1 in ovarian endometrioid, ESR1 in uterine endometrioid, and SMARCA4 in ovarian mucinous carcinomas. Whole-genome sequencing revealed rearrangements involving PTEN, NF1, and NF2 in ovarian endometrioid carcinomas and NF1 and MED1 in ovarian mucinous carcinomas. The number of alterations, affected genes, and genome-wide methylation profiles were not distinguishable between ovarian and uterine endometrioid carcinomas, supporting the hypothesis that these tumors share a tissue of origin. In contrast, mutation and methylation patterns in ovarian mucinous carcinomas were different from gastrointestinal mucinous carcinomas. These analyses provide insights into the genomic landscapes and origins of mucinous and endometrioid ovarian carcinomas, providing new avenues for early clinical intervention and management of patients with these cancers. Integrative multi-omic analyses support a common tissue of origin between ovarian endometrioid and uterine endometrioid carcinomas but not between ovarian mucinous and gastric or pancreatic mucinous carcinomas.

Usage metrics

    Cancer Research Communications

    Licence

    Exports

    RefWorks
    BibTeX
    Ref. manager
    Endnote
    DataCite
    NLM
    DC