Dr. Geraldine Schneider Yarbro, 38, of the Johns Hopkins University Cancer Center, was killed May 17 when she fell to her death from the Denver Hilton Hotel in Denver, Colo. Dr. Yarbro had accidently fallen against the window of her hotel room causing the glass to break, according to Denver police.

Dr. Yarbro, a research associate at the Johns Hopkins Center, was attending a conference sponsored by the American Society for Clinical Oncology and the American Association of Cancer Research.

Dr. Yarbo graduated from the University of Miami in 1968 and from its Medical School in 1972. She served as an intern and a resident at the University's Medical Center for three years, then spent two years as a clinical associate at the National Cancer Institute in Bethesda, Md. before joining the Johns Hopkins Center.

She had published articles in the Journal of Clincial Investigation, Seminars in Oncology, Seminars in Hemotology and Cancer Research. Dr. Yarbro lived in Columbia, Md. In February she married Dr. John Yarbro who lives in Columbia, Mo. She was planning to join him in Columbia, Mo. in another year.

Besides her husband she is survived by her mother, Marie Schneider, of Sunrise, Fla. and by two sons from a previous marriage, Eugene and Richard Konior, also of Sunrise, Fla.

Memorial gifts may be sent to Dr. Brigette Leventhal at the Johns Hopkins University Cancer Center where a memorial is being established in Dr. Yarbro's name.