title: Combination of multiple serum markers using an artificial neural network to improve specificity in discriminating malignant from benign pelvic masses.
abstract: A panel of four selected tumor markers, CA 125 II, CA 72-4, CA 15-3, and lipid-associated sialic acid, was analyzed collectively using an artificial neural network (ANN) approach to differentiate malignant from benign pelvic masses. A dataset of 429 patients, 192 of whom had malignant histology, was retrospectively used in the study. A prototype ANN classifier was developed using a subset of the data which included 73 patients with malignant conditions and 101 patients with benign conditions. The ANN classifier demonstrated a much improved specificity over that of the assay CA 125 II alone (87.5% vs 68.4%) while maintaining a statistically comparable sensitivity (79.0% vs 82.4%) in discriminating malignant from benign pelvic masses in an independent validation test using data from the remaining 255 patients which had been set aside and kept blind to the developers of the ANN system. A similar improvement in specificity was observed among patients under 50 years of age (82.3% vs 62.0%). The ANN system was further tested using additional serum specimens collected from 196 apparently healthy women. The ANN system had a specificity of 100.0% compared to that of 94.8% with the assay CA 125 II alone.
authors: Division of Medicine, University of Texas M.D. Anderson Cancer Center, Houston, Texas, USA.
authors: Z
authors: Z
authors: Zhang
authors: S D
authors: SD
authors: Barnhill
authors: H
authors: H
authors: Zhang
authors: F
authors: F
authors: Xu
authors: Y
authors: Y
authors: Yu
authors: I
authors: I
authors: Jacobs
authors: R P
authors: RP
authors: Woolas
authors: A
authors: A
authors: Berchuck
authors: K R
authors: KR
authors: Madyastha
authors: R C
authors: RC
authors: Bast
mesh_terms: D015295:Antigens, Tumor-Associated, Carbohydrate / Q000097:blood*; D014408:Biomarkers, Tumor / Q000097:blood*; D018394:CA-125 Antigen / Q000097:blood*; D003937:Diagnosis, Differential; D005260:Female; D005833:Genital Neoplasms, Female / Q000097:blood / Q000175:diagnosis*; D006801:Humans; D018396:Mucin-1 / Q000097:blood*; D016571:Neural Networks, Computer; D010386:Pelvic Neoplasms / Q000097:blood / Q000175:diagnosis*; D012372:ROC Curve; D012189:Retrospective Studies; D012680:Sensitivity and Specificity
chemical_list: D015295:Antigens, Tumor-Associated, Carbohydrate; D014408:Biomarkers, Tumor; D018394:CA-125 Antigen; C083825:CA-72-4 antigen; D018396:Mucin-1