A Harvard professor and founder of Boston IVF, Dr. Merle Berger, is being sued for allegedly inseminating a woman with his own sperm instead of an anonymous donor.

Sarah Depoian and her husband went to receive the treatment in 1980 and Berger allegedly promised “to perform an insemination using the sperm of a medical resident who resembled her husband, who did not know her, and whom she did not know. With that understanding, Ms. Depoian consented to the insemination.”

The donor-conceived child, Bester, now 42, used a home DNA test earlier this year and found that Dr. Berger was her biological father.