Correlation between Pituitary Stalk Interruption Syndrome and Prokineticin Receptor 2 and Prokineticin 2 Mutations.

OBJECTIVE:To analyze the correlation between pituitary stalk interruption syndrome (PSIS) and prokineticin receptor 2 (PROKR2) and prokineticin 2 (RROK2) mutations. METHODS:PROKR2 and RROK2 genotypes were identified by multiplex polymerase chain reaction analysis with exon-flanking primers and by automated sequencing techniques with peripheral blood DNA samples from 59 patients with PSIS. RESULTS:Of these 59 PSIS patients, 6 showed intragenic deletions at the PROKR2 locus. Of them, 5 patients exhibited intragenic subsititution of exon 2 (c.991G>A), and the remaining one patient exhibited intragenic subsititution of exon 2 (c.1057C>T). No PROK2 mutation was found in these PSIS patients. CONCLUSION:PROKR2 may be the susceptibility gene of PSIS.

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