In Memoriam

In memoriam: William S. Sly

ASBMB Staff
By ASBMB Staff
Aug. 11, 2025

William S. Sly, professor emeritus of biochemistry and molecular biology at Saint Louis University School of Medicine, died Saturday, May 31, 2025, at the age of 92. He served on the American Society for Biochemistry and Molecular Biology Council in 2005 and 2006 and was an ASBMB member for 35 years.

William S. Sly
William S. Sly

Born on October 19, 1932, in East St. Louis, Illinois, Sly earned his undergraduate degree from Saint Louis University in 1953 and his M.D. from the School of Medicine in 1957. He trained in internal medicine at Washington University in St. Louis and conducted research at the National Institute of Health laboratories in Bethesda, Maryland; Madison, Wisconsin; and Paris. He served as head of the division of medical genetics at Wash U for 20 years before returning to his alma mater to become the Alice A. Doisy professor and chairman of the Edward A. Doisy Department of Biochemistry and Molecular Biology. He chaired the department for 26 years.

In 2007, Sly was named the inaugural recipient of the James B. and Joan C. Peter endowed chair in biochemistry and molecular biology. Sly retired from SLU in 2014 and was named an emeritus professor. 

Sly is best known for work on mucopolysaccharidosis type VII MPS-VII, a rare genetic disorder characterized by bone defects, developmental delays, intellectual disabilities and premature death. Sly identified the first patient with this disorder and helped develop the first lifesaving Federal Drug Administration–approved enzyme replacement treatment. In recognition of his contributions to the understanding of this condition, it is now referred to as Sly syndrome.

Sly won numerous awards during his career, including the Passano Award; Coriell Medal; Peter H. Raven Lifetime Achievement Award from the Academy of Science of Saint Louis; Distinguished Scientist Award from the Clinical Ligand Assay Society; and the Life for MPS award from the International MPS Network. He was also a member of the National Academy of Sciences.

In 2011, Sly received the Association of American Medical Colleges' Award for Distinguished Research in the Biomedical Sciences for his outstanding clinical and laboratory research.

In 2021, a mentee and colleague of Sly, Abdul Waheed, emeritus research professor of biochemistry at SLU, gave $1 million to the department of biochemistry in honor of Sly. To recognize Waheed’s gift, the William S. Sly Centennial Chair was established.

“When I came to SLU, Dr. Sly became a trusted mentor, and I am proud to honor his legacy through a bequest,” said Waheed at the time he made his gift in a SLU press release. “Celebrating the 100th year of the department by supporting an endowed chair and simultaneously recognizing Dr. Sly is a rewarding experience and essential for the future of research.”

Sly is survived by his wife of 64 years, Peggy Sly, seven children, 26 grandchildren and seven great-grandchildren.

Enjoy reading ASBMB Today?

Become a member to receive the print edition four times a year and the digital edition monthly.

Learn more
ASBMB Staff
ASBMB Staff

This article was written by a member or members of the American Society for Biochemistry and Molecular Biology staff.

Get the latest from ASBMB Today

Enter your email address, and we’ll send you a weekly email with recent articles, interviews and more.

Latest in People

People highlights or most popular articles

How undergrad research catalyzes scientific careers
Essay

How undergrad research catalyzes scientific careers

Aug. 27, 2025

Undergraduate research doesn’t just teach lab skills, it transforms scientists. For Antonio Rivera and Julissa Cruz–Bautista, joining a lab became a turning point, fostering critical thinking, persistence and research identity.

Simcox and Gisriel receive mentoring award
Member News

Simcox and Gisriel receive mentoring award

Aug. 25, 2025

They were honored for contributing their time, knowledge, energy and enthusiasm to mentoring postdocs in their labs.

ASBMB names 2025 Marion B. Sewer scholarship recipients
Society News

ASBMB names 2025 Marion B. Sewer scholarship recipients

Aug. 21, 2025

Ten undergraduates interested in biochemistry and molecular biology will each receive $2,000 toward their tuition and related educational costs.

Attie named honorary professor
Member News

Attie named honorary professor

Aug. 18, 2025

This award includes $100,000 of research funding and recognizes faculty who have made major contributions to the advancement of knowledge through their research, teaching and service activities.

Meet the 2025 SOC grant awardees
Outreach

Meet the 2025 SOC grant awardees

Aug. 15, 2025

Five science outreach and communication projects received up to $1,000 from ASBMB to promote the understanding of molecular life science.

Unraveling cancer’s spaghetti proteins
Profile

Unraveling cancer’s spaghetti proteins

Aug. 13, 2025

MOSAIC scholar Katie Dunleavy investigates how Aurora kinase A shields oncogene c-MYC from degradation, using cutting-edge techniques to uncover new strategies targeting “undruggable” molecules.