Prognostic relevance of circulating tumor cells in metastatic uveal melanoma.

Abstract:

OBJECTIVE:Uveal melanoma primarily metastasizes hematogenously with metastases often confined to the liver. The aim of this study was to investigate the presence of circulating tumor cells (CTC) in patients with metastatic disease as a marker for systemic disease and to determine their prognostic relevance. METHODS:Blood samples from 68 patients were collected at the time of initial treatment of metastases. mRNA expression of tyrosinase and MelanA/MART1 as a surrogate marker for the presence of CTC was analyzed by real-time RT-PCR and compared with patient characteristics. RESULTS:CTC were detected in 63% of all patients and in 67% of the 48 patients with only liver metastases. Univariate and multivariate analyses revealed PCR results and serum lactate dehydrogenase as independent prognostic factors for progression-free (hazard ratios 2.2/3.5) and overall survival (hazard ratios 4.0/6.5). Combination of PCR and lactate dehydrogenase divided the patient cohort into 3 groups with distinct prognosis. CONCLUSION:CTC as evidence for systemic disease can be found in the majority of patients with metastatic uveal melanoma, including patients with visible disease confined to the liver. Detection of CTC-specific mRNA transcripts for tyrosinase and MelanA/MART1 by PCR is a poor prognostic factor for progression-free and overall survival. Characterization of CTC could improve the understanding of their biology.

journal_name

Oncology

journal_title

Oncology

authors

Schuster R,Bechrakis NE,Stroux A,Busse A,Schmittel A,Thiel E,Foerster MH,Keilholz U

doi

10.1159/000328283

subject

Has Abstract

pub_date

2011-01-01 00:00:00

pages

57-62

issue

1-2

eissn

0030-2414

issn

1423-0232

pii

000328283

journal_volume

80

pub_type

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