Suboptimal response to GnRHa long protocol is associated with a common LH polymorphism

作者：Alviggi C^*; Clarizia R; Pettersson K; Mollo A; Humaidan P; Strina I; Coppola M; Ranieri A; D'Uva M; De Placido G

来源：Reproductive BioMedicine Online, 2011, 22: S67-S72.

DOI：10.1016/S1472-6483(11)60011-4

• beta-subunit variant
• immunoassays
• IVF
• pharmacogenomics
• polymorphism
• poor responders

The aim of this observational preliminary trial was to estimate the association between the most common polymorphism of LH (LH-variant: v-beta LH), with different profiles of ovarian response to recombinant human FSH (rhFSH). A total of 60 normogonadotrophic patients undergoing a gonadotrophin-releasing hormone analogue long down-regulation protocol followed by stimulation with recombinant human FSH (rhFSH) for IVF/intracytoplasmic sperm injection, and in whom at least five oocytes were retrieved were retrospectively included. On the basis of the total rhFSH consumption, patients were divided into three groups: Group A: 22 women requiring a cumulative dose of rhFSH >3500 IU; Group B: 15 patients requiring 2000-3500 IU; Group C (control): 23 women requiring <2000 IU. The presence of v-LH was evaluated using specific immunoassays. Peak oestradiol concentrations were significantly lower in Group A when compared with both groups B (P < 0.05) and C (P < 0.001). Group A had a significantly lower (P < 0.05) number of oocytes retrieved (7.3 +/- 1.5, 11.7 +/- 2.4 and 14.7 +/- 4.1 in the three groups, respectively). Seven carriers (31.8%) of v-LH were found in Group A, whereas only one variant (6.7%) was observed in Group B; no variant was detected in Group C. These preliminary results suggest that v-LH is more frequent in women with ovarian resistance to rhFSH.

• 出版日期2011-2