Emails reveal that a facility in Dubai and others have asked geneticist He Jiankui for help in gene-editing embryos.

A company announces the first pregnancy in a study of whether donor mitochondria can boost IVF’s odds of success.

The use of pronuclear transfer to treat infertility must first be backed by evidence it can work in cases where parents seek to avoid mitochondrial mutations.

Among their many functions, macrophages in mouse testes guard sperm against attacks by other immune cells. 

Using human pluripotent stem cells, scientists engineered an amniotic sac-like structure, potentially useful for uncovering the elusive cellular signals that lead to infertility.

An app-based sperm analyzer screens for signs of male infertility.

Differences between cultures used for in vitro fertilization techniques can impact fertility and offspring health, researchers report.

The reprogrammed germ-like cells were unable to fertilize eggs, however. 

Scientists find a common genetic variant in mothers that decreases the chance of successful pregnancy.