‘Walking Dead’ Star Kelley Mack’s Cause of Death at 33 Is a Rare Brain Tumor, Family Says

Actor Kelley Mack, known for her roles on shows like “The Walking Dead” and “9-1-1,” died on Aug. 2. She was 33.

Her family announced her death in a statement on Instagram Aug. 5, writing, “It is with indelible sadness that we are announcing the passing of our dear Kelley.”

“Kelley passed peacefully on Saturday evening with her loving mother Kristen and steadfast aunt Karen present. Kelley has already come to many of her loved ones in the form of various butterflies,” her family said, adding a butterfly and red heart emoji. “She will be missed by so many to depths that words cannot express.”

Born Kelley Klebenow, Mack was born in Cincinnati, Ohio, and started acting in commercials as a child, starring on shows such as “The Walking Dead,” “Chicago Med” and “9-1-1.” She also carried five producing credits, did voiceover work on films like “Spider-Man: Into the Spider-Verse,” and wrote screenplays with her mother, the statement said.

Mack received a bachelor’s degree in cinematography from Chapman University in 2014, and lived in the Los Angeles area for the past 11 years.

She is survived by her parents, her sister, her brother, two of her grandparents and her boyfriend.

A remembrance of Mack’s life will be held in Glendale, Ohio, on Aug. 16, and a celebration of life will be held at a later date in Los Angeles, her family’s statement read.

“Kelley’s legacy will live on through her contributions to film and television, and in the hearts of those who loved her,” her family said. “She will be deeply missed but forever remembered for her talent, kindness and vibrant spirit.”

How Did Kelley Mack Die?

Mack’s family said in a Aug. 5 CaringBridge post that the actor had died after “battling glioma of the central nervous system.”

The family did not share details on Mack’s health but noted she had “passed away peacefully” in Cincinnati, Ohio.

What Is a Glioma?

A glioma is a tumor that forms when glial cells, which normally support nerves and help the central nervous system, grow out of control, according to Cleveland Clinic. Gliomas are usually found in the brain or the spinal cord.

Most gliomas are treated with surgery, followed by radiation and chemotherapy, according to Cleveland Clinic.

Anna Kaplan

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