Male chromosome 9 inversion is a polymorphic alteration, a chromosomal interarm inversion abnormality, a type of chromosomal structural abnormality. Inter-arm inversions have significant pathologic effects compared to intra-arm inversions. A male chromosome 9 inversion results in an increased risk of early miscarriage for the wife, but there is a possibility of a normal pregnancy. Childbirth may lead to problems such as spontaneous abortion and stillbirth if inherited in the fetus. Since one of the chromosome 9s where the interarm inversion occurs is normal, if it is a normal course of pregnancy, it means that there is a 1/2 chance that the fetus will get a normal chromosome. To ensure eugenics, it is recommended that the patient can undergo IVF, i.e., in vitro fertilization. It is recommended to consult a medical professional for specific advice.