Abstract
The association between clinical findings and the occurrence of spermagglutinating antibodies was investigated in serum from women in 326 consecutive infertile couples. No relationship was found between unexplained infertility and the occurrence of sperm antibodies as detected by the tray agglutination technique. The occurrence of pregnancy at follow-up was the same in women with and without circulating sperm antibodies. However, the cumulative probability of conception per year was significantly lower in women with spermagglutinating antibodies than in women without such activity (0.005 greater than 2 P greater than 0.001), and the results showed a positive correlation between the duration of infertility and the occurrence of sperm antibodies. The latter findings may either reflect a fertility-reducing effect of the sperm antibodies or represent a time-related increasing tendency to develop sperm antibodies secondarily to the infertility.
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