NBC-5 News anchor Rob Stafford will return to the air Monday, after months of grueling treatment for a rare blood disorder that gave him a harrowing look at "my own mortality."

"I thought we'd get this thing nipped in the bud," said Stafford, 58, who took a leave of absence in March after being diagnosed to be in the early stages of amyloidosis.

Instead, Stafford said, he spent much of the last six months too sick to eat, drink or walk while learning that the road back to health from serious illness is a process.

"You learn that everybody reacts to these drugs differently and there is no guarantee of any outcome," he said.

Amyloidosis occurs when abnormal protein called amyloid is produced in bone marrow and can be deposited in tissues and organs. There are more than 40 types of the disorder that affect the heart, kidneys, liver, spleen, nervous system and digestive tract. Stafford's type known as light chain amyloidosis is rare, according to Dr. Ronald Go, Stafford's hematologist at the Mayo Clinic in Rochester, Minn.

Doctors had planned to remove or "harvest" stem cells from Stafford's own bone marrow and freeze millions of healthy ones. After wiping out the unhealthy cells using chemotherapy, Stafford was to have the healthy stem cells transplanted back into his bone marrow, where they were to reproduce themselves, Go said in March.

Zbigniew Bzdak/Chicago Tribune

Rob Stafford, shown Aug. 24, 2017, is planning to return to the anchor desk at NBC-5 News on Aug. 28 after months battling amyloidosis.

Rob Stafford, shown Aug. 24, 2017, is planning to return to the anchor desk at NBC-5 News on Aug. 28 after months battling amyloidosis. (Zbigniew Bzdak/Chicago Tribune)

But Stafford ran into several complications immediately after the transplant process began that forced him to remain hospitalized for most of March.

"There were times in the hospital when I thought he might not make it," said his wife, Lisa Stafford, who would jog around the Rochester area to alleviate her stress.

"On the runs, I would stop at every church to pray and light a candle."

Stafford returned to his home in Hinsdale in early April, too weak sometimes to walk across the room, drink a milkshake or even stay awake for the news, he said.

In June, test results showed the bone marrow transplant did not work as they had planned, and Stafford would need a new course of action to fight the disease, he said.

It was a terrifying place to be, Stafford said.

"You think, 'What if nothing works?'" he said. "I have clearly thought about my own mortality."

Doctors at Rush University Medical Center started Stafford on a new regimen of weekly chemotherapy, which dramatically improved his health. While he has not yet reached the low amyloid measurements that define remission, doctors are optimistic about his recovery and have cleared Stafford to return to work, he said.

Stafford will return to the 10 p.m. news. Dick Johnson and Patrick Fazio will share anchoring duties with Allison Rosati at 5 p.m. and 6 p.m. until Stafford is ready to return to those newscasts, said Frank Whittaker, station manager and vice president of news for NBC Chicago.

"We are eagerly looking forward to Rob's return on Monday night," Whittaker said in an email. "He has inspired all of us with his courage and determination over the past six months. It will be great to have him back in our newsroom."

Stafford said he remains grateful for the support he and Lisa felt from viewers, who sent him a steady stream of Facebook messages, cards and personal stories.

"It's like running a marathon, and there are all these people along the side cheering you on," Stafford said. "It helps you get through it."

vortiz@chicagotribune.com

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After treatment for serious illness, NBC-5 anchor Rob Stafford returning to air - Chicago Tribune