Maternal serum placental protein 13 at 11-13 weeks

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Expand view Topic review: Maternal serum placental protein 13 at 11-13 weeks

Maternal serum placental protein 13 at 11-13 weeks

Post by caryn » Fri Oct 02, 2009 07:52 am

In PE pregnancies there was a significant association between serum PP13 and both uterine artery PI and serum PAPP-A (p < 0.0001 for both). Logistic regression analysis demonstrated that serum PP13 did not improve significantly the prediction of early-PE provided by a combination of maternal factors, uterine artery PI and PAPP-A. CONCLUSION: PP13 is implicated in the pathogenesis of impaired placentation and subsequent development of early-PE but measurement of this placental product is unlikely to be useful in screening for the disease at 11-13 weeks.

http://www.ncbi.nlm.nih.gov/pubmed/19777530

Here's an example of what we're up against in our attempts to design an early detection test. Even though PP13 is really tightly correlated to PAPP-A levels and to crap uterine arteries in preeclamptics -- a freakin' p-value of less than .0001 means there's a less than one in 10000 chance that these things happen together by simple coincidence -- adding it to the screening tests helps not one whit in improving sensitivity or specificity.

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