Utilizing Nottingham Prognostic Index in microarray gene expression profiling of breast carcinomas

Dylan V. Miller, Alexey A. Leontovich, Wilma L. Lingle, Vera Jean Suman, Maureen L. Mertens, James Lillie, Kimberly A. Ingalls, Edith A. Perez, James N. Ingle, Fergus J Couch, Daniel W Visscher

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

We report a novel approach to gene expression profiling using the Nottingham Prognostic Index (NPI) to stratify 26 patients with invasive breast carcinoma. As an aggregate index of parameters reflecting metastatic potential, growth rate, and genetic instability the NPI has distinct advantages over other clinicopathologic features used to segregate breast cancer patients. As a continuous variable it offers a responsive and sensitive means of modeling a continuum of clinical aggressiveness. Using RNA extracted from 26 tumors and cDNA microarrays with 23 343 unique genetic elements, 84 genes and expressed sequence tags were identified whose expression patterns correlated with NPI. Differential expression by immunohistochemistry (IHC) was also observed for two of three genes evaluated by this method. Correlation was determined by the Spearman rank correlation method with null distribution analysis. Among the 84 genetic elements were seven previously implicated in neoplastic progression (including the two demonstrating differential expression by IHC), 11 without specific cancer association but localized to chromosomal sites whose loss or gain has been identified in cytogenetic studies of breast carcinoma, and 73 not previously associated with breast carcinoma. Collectively, the expression patterns of these 84 elements have potential to distinguish high and low NPI patient samples. These data add support to the assertion that prognostic groups of breast carcinoma are reflected in distinguishable expression profiles of a limited set of genes.

Original languageEnglish (US)
Pages (from-to)756-764
Number of pages9
JournalModern Pathology
Volume17
Issue number7
DOIs
StatePublished - Jul 2004

Fingerprint

Gene Expression Profiling
Breast Neoplasms
Immunohistochemistry
Genes
Expressed Sequence Tags
Oligonucleotide Array Sequence Analysis
Cytogenetics
Neoplasms
RNA
Growth

Keywords

  • Breast neoplasms
  • Carcinoma, infiltrating duct
  • cDNA microarray
  • Gene expression profiling
  • Nottingham Prognostic Index

ASJC Scopus subject areas

  • Pathology and Forensic Medicine

Cite this

Utilizing Nottingham Prognostic Index in microarray gene expression profiling of breast carcinomas. / Miller, Dylan V.; Leontovich, Alexey A.; Lingle, Wilma L.; Suman, Vera Jean; Mertens, Maureen L.; Lillie, James; Ingalls, Kimberly A.; Perez, Edith A.; Ingle, James N.; Couch, Fergus J; Visscher, Daniel W.

In: Modern Pathology, Vol. 17, No. 7, 07.2004, p. 756-764.

Research output: Contribution to journalArticle

Miller, DV, Leontovich, AA, Lingle, WL, Suman, VJ, Mertens, ML, Lillie, J, Ingalls, KA, Perez, EA, Ingle, JN, Couch, FJ & Visscher, DW 2004, 'Utilizing Nottingham Prognostic Index in microarray gene expression profiling of breast carcinomas', Modern Pathology, vol. 17, no. 7, pp. 756-764. https://doi.org/10.1038/modpathol.3800114
Miller, Dylan V. ; Leontovich, Alexey A. ; Lingle, Wilma L. ; Suman, Vera Jean ; Mertens, Maureen L. ; Lillie, James ; Ingalls, Kimberly A. ; Perez, Edith A. ; Ingle, James N. ; Couch, Fergus J ; Visscher, Daniel W. / Utilizing Nottingham Prognostic Index in microarray gene expression profiling of breast carcinomas. In: Modern Pathology. 2004 ; Vol. 17, No. 7. pp. 756-764.
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