A Multi-institutional Pooled Analysis Demonstrates That Circulating miR-371a-3p Alone is Sufficient for Testicular Malignant Germ Cell Tumor Diagnosis.
Clin Genitourin Cancer
; 19(6): 469-479, 2021 12.
Article
in En
| MEDLINE
| ID: mdl-34629299
ABSTRACT
BACKGROUND:
Circulating microRNAs have clear potential for improving malignant germ-cell-tumor (MGCT) diagnosis. Here, we address the central issue of whether measurement of a single microRNA is sufficient for detecting testicular MGCTs, or whether there is added benefit in quantifying other members of the 4-microRNA panel previously identified (miR-371a-3p/miR-372-3p/miR-373-3p and miR-367-3p). PATIENTS ANDMETHODS:
We performed a pooled analysis of available published raw data where all 4 panel miRNAs had been assessed using pre-amplification PCR technology (4 studies; total 329 patients). Two studies using identical methodology (and identical normalization using endogenous miR-30b-5p) were used in the discovery phase (n = 51 patients 17 MGCT, 34 controls). The 2 other studies (n = 278 patients 140 MGCT, 138 controls), which assessed the same test panel but with different normalization approaches (endogenous miR-93-5p, exogenous cel-miR-39-3p), were used for the validation phase. We derived sensitivity, specificity, positive- and negative-predictive-values (PPV/NPV) for the detection thresholds that maximised the Youden Index (YI).RESULTS:
In the discovery-phase, the YI was 0.97 for miR-371a-3p (sensitivity = 1, specificity = 0.97), 0.71 (miR-367-3p), 0.68 (miR-372-3p), and 0.50 (miR-373-3p). These findings were confirmed in the validation-phase, with YI of 0.75 for miR-371a-3p (sensitivity = 0.90, specificity 0.85), 0.55 (miR-367-3p), 0.47 (miR-372-3p), and 0.51 (miR-373-3p). Importantly, no combination of markers added additional diagnostic benefit to miR-371a-3p alone, in either the discovery or the validation phase.CONCLUSION:
Quantifying circulating miR-371a-3p alone is sufficient for testicular MGCT diagnosis. PCR measurement of this single miRNA marker will be more cost-effective and easier to interpret, facilitating future incorporation into routine clinical practice.Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Testicular Neoplasms
/
Neoplasms, Germ Cell and Embryonal
/
MicroRNAs
Type of study:
Diagnostic_studies
/
Prognostic_studies
Limits:
Humans
/
Male
Language:
En
Journal:
Clin Genitourin Cancer
Journal subject:
NEOPLASIAS
/
UROLOGIA
Year:
2021
Document type:
Article
Affiliation country:
Canada