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  • Title: Serum concentrations of squamous-cell carcinoma antigen and tissue polypeptide antigen in the follow-up of patients with vulvar cancer.
    Author: Hefler L, Frischmuth K, Heinze G, Sliutz G, Leodolter S, Reinthaller A, Kainz C, Tempfer C.
    Journal: Int J Cancer; 1999 Oct 08; 83(2):167-70. PubMed ID: 10471522.
    Abstract:
    Our aim was to evaluate the clinical usefulness of serum concentrations of squamous-cell carcinoma antigen (SCC-Ag) and tissue polypeptide antigen (TPA) in the follow-up of patients with vulvar cancer. We measured SCC-Ag and TPA in 480 serum samples of 82 patients with squamous-cell vulvar cancer. Results were correlated with clinical data. SCC-Ag, TPA and the combination of SCC-Ag and TPA reached a sensitivity and specificity of 27%/97%, 28%/75% and 40%/73%, respectively. The sensitivity and specificity of the marker combination SCC-Ag and TPA was not significantly higher compared with SCC-Ag alone (McNemar's test, p = 0.6 and p = 0.09, respectively). Of the 35 patients with recurrent disease during follow-up, 19, 6 and 10 developed local, regional and distant recurrent disease, respectively. SCC-Ag showed lead-time effects in 26%, 75% and 50% and TPA in 25%, 0% and 33% of patients with local, regional and distant recurrent disease, respectively. The combination of SCC-Ag and TPA showed lead-time effects in 50%, 75% and 50% of patients with local, regional and distant recurrent disease, respectively. The difference between median lead-times of the combination of SCC-Ag and TPA and SCC-Ag alone was not statistically significant (Mann-Whitney U-test, p = 0.4). Our data show that serum SCC-Ag displays good sensitivity/specificity characteristics in the follow-up of vulvar cancer patients, with lead-time effects seen in 75% and 50% of patients with regional and distant recurrent disease, respectively. Furthermore, our data indicate that combining SCC-Ag with TPA is not a successful strategy to improve the sensitivity or the duration of lead-time effects in the follow-up of patients with vulvar cancer.
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