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Molecular Profiling to Determine Clonality of Serial Magnetic Resonance Imaging/Ultrasound Fusion Biopsies from Men on Active Surveillance for Low-Risk Prostate Cancer.

Publication ,  Journal Article
Palapattu, GS; Salami, SS; Cani, AK; Hovelson, DH; Lazo de la Vega, L; Vandenberg, KR; Bratley, JV; Liu, C-J; Kunju, LP; Montgomery, JS ...
Published in: Clin Cancer Res
February 15, 2017

Purpose: To determine whether MRI/ultrasound (MRI/US) fusion biopsy facilitates longitudinal resampling of the same clonal focus of prostate cancer and to determine whether high-grade cancers can evolve from low-grade clones.Experimental Design: All men on active surveillance who underwent tracking MRI/US fusion biopsy of Gleason 6 prostate cancer, on at least two distinct occasions, between 2012 and 2014 were enrolled. MRI/US fusion was used to track and resample specific cancer foci. IHC for ERG and targeted RNA/DNA next-generation sequencing (NGS) were performed on formalin-fixed paraffin-embedded prostate biopsy specimens to assess clonality.Results: Thirty-one men with median age and PSA of 65 years and 4.6 ng/mL, respectively, were analyzed. The median sampling interval was 12 months (range, 5-35). Of the 26 evaluable men, ERG IHC concordance was found between initial and repeat biopsies in 25 (96%), indicating resampling of the same clonal focus over time. Targeted NGS supported ERG IHC results and identified unique and shared driving mutations, such as IDH1 and SPOP, in paired specimens. Of the nine men (34.6%) who were found to have Gleason ≥7 on repeat biopsy, all displayed temporal ERG concordance. Prioritized genetic alterations were detected in 50% (13/26) of paired samples. Oncogenic mutations were detected in 22% (2/9) of Gleason 6 cancers prior to progression and 44% (4/9) of Gleason ≥7 cancers when progression occurred.Conclusions: Precise tracking of prostate cancer foci via MRI/US fusion biopsy allowed subsequent resampling of the same clonal focus of cancer over time. Further research is needed to clarify the grade progression potential of Gleason 6 prostate cancer. Clin Cancer Res; 23(4); 985-91. ©2016 AACR.

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Published In

Clin Cancer Res

DOI

EISSN

1557-3265

Publication Date

February 15, 2017

Volume

23

Issue

4

Start / End Page

985 / 991

Location

United States

Related Subject Headings

  • Ultrasonography
  • Prostatic Neoplasms
  • Oncology & Carcinogenesis
  • Neoplasm Proteins
  • Neoplasm Grading
  • Mutation
  • Middle Aged
  • Male
  • Magnetic Resonance Imaging
  • Humans
 

Citation

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Palapattu, G. S., Salami, S. S., Cani, A. K., Hovelson, D. H., Lazo de la Vega, L., Vandenberg, K. R., … Marks, L. S. (2017). Molecular Profiling to Determine Clonality of Serial Magnetic Resonance Imaging/Ultrasound Fusion Biopsies from Men on Active Surveillance for Low-Risk Prostate Cancer. Clin Cancer Res, 23(4), 985–991. https://doi.org/10.1158/1078-0432.CCR-16-1454
Palapattu, Ganesh S., Simpa S. Salami, Andi K. Cani, Daniel H. Hovelson, Lorena Lazo de la Vega, Kelly R. Vandenberg, Jarred V. Bratley, et al. “Molecular Profiling to Determine Clonality of Serial Magnetic Resonance Imaging/Ultrasound Fusion Biopsies from Men on Active Surveillance for Low-Risk Prostate Cancer.Clin Cancer Res 23, no. 4 (February 15, 2017): 985–91. https://doi.org/10.1158/1078-0432.CCR-16-1454.
Palapattu GS, Salami SS, Cani AK, Hovelson DH, Lazo de la Vega L, Vandenberg KR, et al. Molecular Profiling to Determine Clonality of Serial Magnetic Resonance Imaging/Ultrasound Fusion Biopsies from Men on Active Surveillance for Low-Risk Prostate Cancer. Clin Cancer Res. 2017 Feb 15;23(4):985–91.
Palapattu, Ganesh S., et al. “Molecular Profiling to Determine Clonality of Serial Magnetic Resonance Imaging/Ultrasound Fusion Biopsies from Men on Active Surveillance for Low-Risk Prostate Cancer.Clin Cancer Res, vol. 23, no. 4, Feb. 2017, pp. 985–91. Pubmed, doi:10.1158/1078-0432.CCR-16-1454.
Palapattu GS, Salami SS, Cani AK, Hovelson DH, Lazo de la Vega L, Vandenberg KR, Bratley JV, Liu C-J, Kunju LP, Montgomery JS, Morgan TM, Natarajan S, Huang J, Tomlins SA, Marks LS. Molecular Profiling to Determine Clonality of Serial Magnetic Resonance Imaging/Ultrasound Fusion Biopsies from Men on Active Surveillance for Low-Risk Prostate Cancer. Clin Cancer Res. 2017 Feb 15;23(4):985–991.

Published In

Clin Cancer Res

DOI

EISSN

1557-3265

Publication Date

February 15, 2017

Volume

23

Issue

4

Start / End Page

985 / 991

Location

United States

Related Subject Headings

  • Ultrasonography
  • Prostatic Neoplasms
  • Oncology & Carcinogenesis
  • Neoplasm Proteins
  • Neoplasm Grading
  • Mutation
  • Middle Aged
  • Male
  • Magnetic Resonance Imaging
  • Humans