Global One (G1)— Twin girls born in China this month may change the future of genetics after a researcher said he edited their genes.

He Jiankui said he altered the girls’ genes to make them immune to the HIV virus.

If true, they’re the world’s first genetically altered babies.

He said, “I feel a strong responsibility that it’s not just to make a first, but also make it an example. Society will decide what to do next.”

His claims have not yet been independently verified or reviewed.

Several scientists have also come forward to criticize the research.

One said, “If this is a false report, it is scientific misconduct and deeply irresponsible. If true, it is still scientific misconduct.”

Another called He’s research “monstrous.”

Meanwhile, the university He is affiliated with said it was unaware of the research and they believe “that it seriously violates academic ethics and academic norms.”