Multiplex short tandem repeat DNA analysis confirms the accuracy of p57 KIP2 immunostaining in the diagnosis of complete hydatidiform mole

Detailed histopathologic examination remains to be the basis for the diagnosis of hydatidiform mole (HM). However, poor sampling, necrosis, and earlier uterine evacuation can lead to uncertainty in the diagnosis. Also, the criteria are subjective, resulting in considerable interobserver variability....

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Veröffentlicht in:Human pathology 2006-11, Vol.37 (11), p.1426-1434
Hauptverfasser: Popiolek, Dorota A., Yee, Herman, Mittal, Khush, Chiriboga, Luis, Prinz, Mechthild K., Caragine, Theresa A., Budimlija, Zoran M.
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container_end_page 1434
container_issue 11
container_start_page 1426
container_title Human pathology
container_volume 37
creator Popiolek, Dorota A.
Yee, Herman
Mittal, Khush
Chiriboga, Luis
Prinz, Mechthild K.
Caragine, Theresa A.
Budimlija, Zoran M.
description Detailed histopathologic examination remains to be the basis for the diagnosis of hydatidiform mole (HM). However, poor sampling, necrosis, and earlier uterine evacuation can lead to uncertainty in the diagnosis. Also, the criteria are subjective, resulting in considerable interobserver variability. The p57 KIP2 gene is paternally imprinted and maternally expressed, and the presence of its protein product serves as a surrogate marker for the nuclear maternal genome. Because a complete HM (CHM) is the only type of conceptus lacking a maternal contribution, p57 KIP2 immunostaining is correspondingly absent, whereas it is present in CHM mimics. Although analysis of DNA microsatellite polymorphisms is a reliable method for the diagnosis and classification of HM, it is not universally available. To assess the relative accuracy of p57 KIP2 immunostaining and molecular diagnosis by nuclear DNA microsatellite polymorphisms in discriminating CHM from its mimics, we analyzed archival tissue from 33 case patients (7 with a definitive diagnosis of CHM, 16 with a possible diagnosis of HM, and 10 with normal placentas) by both methods. Concordant results were obtained in all cases, and p57 KIP2 immunostaining accurately identified all cases of CHM from the groups with a definitive or possible diagnosis of HM. p57 KIP2 immunohistochemistry is a time- and cost-effective means of distinguishing CHM from its mimics in challenging cases.
doi_str_mv 10.1016/j.humpath.2006.04.030
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subjects Hydatidiform mole
p57
Short tandem repeats
title Multiplex short tandem repeat DNA analysis confirms the accuracy of p57 KIP2 immunostaining in the diagnosis of complete hydatidiform mole
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