AI Technology Identifies Sperm Cells, Enabling Successful Conception After Nearly Two Decades

An artificial intelligence algorithm recently scanned 2.5 million images of a semen sample over two hours, identifying two viable sperm cells. This breakthrough enabled couple to conceive after 19 years, as reported in The Lancet journal. The couple, a 39-year-old man and a 37-year-old woman from the US, had previously undergone multiple IVF cycles and surgical procedures to extract sperm.

Men with azoospermia often face challenges as their ejaculate contains little or no sperm. They may undergo surgery to extract sperm from the testes, but this is frequently unsuccessful and can lead to complications like vascular issues or reduced testosterone levels. "Many couples with male-factor infertility are told they have little chance of having a biological child," said Zev Williams, director of the Columbia University Fertility Center.

AI-Powered Sperm Identification

The research team developed 'Sperm Tracking and Recovery' (STAR), an AI-based method for identifying rare sperm in samples previously classified as azoospermic. High-powered imaging technology scans semen samples, capturing over eight million images in under an hour. AI identifies sperm cells, and a chip with tiny channels isolates the portion containing sperm.

A robot then extracts the identified sperm cell for embryo creation or storage. Despite being based on one instance, these findings demonstrate STAR's potential in overcoming barriers for men with azoospermia. "A semen sample can appear totally normal, but when you look under the microscope you discover just a sea of cellular debris, with no sperm visible," Williams explained.

Successful Conception After Years

The STAR system analysed 2.5 million images in about two hours and detected seven sperm cells: two motile and five non-motile. The motile sperms were injected into two mature oocytes, which developed into embryos. These embryos were transferred on day three, leading to the woman's first positive pregnancy test after 13 days.

At eight weeks' gestation, ultrasound confirmed normal foetal development with a heartbeat of 172 beats per minute. Larger clinical trials are underway to assess STAR's efficacy across broader patient populations. This innovative approach offers hope for many couples facing similar fertility challenges.