Robert D. Schreiber (born 1946) is an immunologist and currently is the Alumni Endowed Professor of Pathology and Immunology at Washington University School of Medicine.

[2] In this paper, Stutman tested whether athymic, nude mice which lack an adaptive immune system have an increased incidence of tumors.

However, a key study published in 2000 by Wilfred Jefferies’ Lab [3] revisited Stutman's experiments using the same nude mouse model and provided the first evidence challenging his conclusions.

Schreiber's lab was the first to generate STAT1 deficient mice and has worked to characterize the important role of this gene in innate immunity.

[7] These studies have been critical in forming the scientific basis of many of the immune mediated strategies currently being tested in patients as anti-tumor regimens.