These three genes code the 5-HT1E serotonin receptor ; the pi subunit of the A gamma-aminobutyric acid receptor ; and the alpha-2-actinin subunit of the ionotropic glutamate receptor channel.. 3 new genes in genetic study of suicidal behaviour Three genes that have barely been studied to day have finally provided fresh understanding of patients with suicidal backgrounds. This is the consequence of a study by a team of Spanish experts at Mount Sinai Hospital and Columbia University in the City of New York , which discovered that several mutations are involved. This finding could help to develop future genetic testing to identify predisposition to suicide, without ignoring the importance of cultural and social factors. There is ever-increasing proof pointing to the important role performed by genes in predisposing people to suicidal behaviour , Mercedes P-rez-Rodr-guez, co-author of the study and a researcher at Mount Sinai Medical center in NY , tells SINC.How Does the Birth Control Shot Work? The hormone progesterone in the contraceptive shot primarily works by preventing ovulation . If a female doesn’t ovulate, she cannot have a baby because there is no egg to become fertilized. How Well Will the Birth Control Shot Work? The birth control shot is an extremely effective method of contraceptive. During the period of a full year, less than 3 out of 100 standard couples who use the birth control shot every 3 months could have an accidental pregnancy. The chance of getting pregnant increases if a woman waits longer than three months to get her next shot. In general, how well each kind of contraceptive method works depends on a complete lot of things. These include whether one has any health conditions or is taking any medications that may interfere with its use.