IVF used by some to avoid passing on genetic diseases to offspring

Parents who know they carry genetic mutations for muscular dystrophy, cystic fibrosis, sickle cell anemia, breast cancer, Huntington’s disease, Alzheimer’s and other inherited diseases can undergo IVF, where the mother’s eggs are collected and combined with sperm in a dish, and another procedure called preimplantation genetic testing (PGT), in which embryos are screened for the particular mutation and only disease-free embryos can be implanted in the mother.

“I don’t know why more people don’t embrace these technologies,” said Greg McGuire, 38, of Fishers, Ind., who was diagnosed with Becker muscular dystrophywhen he was 8 years old, one of several family members with the inherited genetic mutation. Because it is passed down from mother to son — and his mother only had sisters — no one in the...