Ricardo Hector Asch (born 26 October 1947)^[1] is an obstetrician, gynecologist, and endocrinologist. He worked with reproductive technology and pioneered gamete intrafallopian transfer (GIFT), as well as working on research linking fertility and marijuana usage,^[2] and investigated the use of GnRH analogues with Andrew Schally.^[3][4] In the mid-1990s he was accused of transferring ova harvested from women into other patients without proper consent at the University of California, Irvine's fertility clinic. Asch left the United States one year before a federal indictment was filed.^[5][6] He was tried and acquitted of all charges in Argentina in 2008.^[7] In 2011 Mexico denied an extradition request by the United States as it would constitute double jeopardy and no new evidence was brought forth.^[8] He is currently living in Mexico City.^[9][10]

Born in Buenos Aires, Argentina, Asch studied at the University of Buenos Aires School of Medicine graduating in 1971. In 1975 he moved to the United States and worked with Robert Benjamin Greenblatt at the Medical College of Georgia before his reproductive endocrinology fellowship at the University of Texas Health Science Center at San Antonio.^[11] Among his many publications were his pioneering experience with GIFT and research on oocyte donation. In 1986 he joined the University of California, Irvine (UCI). In 1990 he became the Director of the Center for Reproductive Health of UCI heading the infertility program. Asch was named Assistant Dean of outreach at UCI, in charge of overseeing recruitment of minority students, the same year.^[12] He lectured worldwide and accrued two honorary professorships by 1994.^[11]

In 1995, the Orange County Register broke the story that Asch—then Chief of the University of California, Irvine's Center for Reproductive Health—and his two partners were accused of transferring women's eggs harvested from women into other patients without their permission.^[13] These eggs were fertilized and the resulting embryos transferred to these other women, some of them then conceiving.^[14][15] At least 15 live births resulted from the alleged practice.^[15] At that time, the misappropriation of human eggs was not legally considered a crime.^[15] However, numerous civil lawsuits were filed, and UCI paid out more than $27 million to settle patient claims.^[15][16] Asch disagreed with the settlements because they did not allow him to prove his innocence or repair his reputation.^[1] Auditors from KPMG Peat Marwick investigated the clinic and found that almost $1 million in income at the clinic had not been reported.^[17]

Asch was defended by students, and colleagues, including Robert Edwards, who accused the media of convicting him before he was charged.^[1][18]

The Orange County Register's investigations into these practices led to that paper's receiving the 1996 Pulitzer Prize for Investigative Reporting.^[19]

In 2006, university officials admitted to the Los Angeles Times that they had not notified at least 20 women whose eggs were allegedly used by Asch and his colleagues.^[20]

Asch worked with reproductive technology and pioneered gamete intrafallopian transfer (GIFT),^[4] a technique in which eggs are removed from a woman's ovaries, and placed in one of the Fallopian tubes, along with the man's sperm. He also worked on research linking marijuana and other drugs to hormone production, ovary function, and the effect on testicles in primates, and the possible negative effects of the usage of neuroactive drugs during adolescence and puberty.^[2] Asch worked with Andrew Schally understanding the effects of the Gonadotropin-releasing hormone (GnRH) in infertility and contraception in primates.^[3] In 1999 he worked on methods for giving birth to a healthy baby in couples with one HIV+ partner.^[29]

According to Scopus, Asch has an h-index of 46, and over 6700 citations,^[30] which would place him in the top 1% of researchers by citations in the Essential Science Indicators.^[31]

Asch, who owned an entertainment company at the time of the scandal, was one of the producers of the Andre Agassi and Nick Bollettieri instructional tennis video Attack.^[32]

• University of California, Irvine School of Medicine#History
• Fertility fraud
• Gamete Intrafallopian Transfer (GIFT)