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A childhood photo of Callie Marshall, left, with sister Rocky Tucker. Marshall was born with Alström syndrome, a rare genetic disease that causes, among other things, vision and hearing loss, heart and lung disease and diabetes.
Courtesy of Rocky Tucker
People hear one-in-half-a-million odds, and they tend to tune out, especially in the context of a medical diagnosis. One in half a million means it’ll happen to someone else, not you or somebody you know. Until it does.
In May, doctors, researchers and affected individuals and families will gather in Fort Worth for an international conference and symposium on Alström syndrome, an exceedingly rare genetic disorder with an estimated 2,000 diagnosed cases worldwide. That’s roughly one in every 500,000 people, though there are likely more living with the disease.
The conference is hosted by Alström Syndrome International, a Burleson-based organization led by Executive Director Rocky Tucker, a Burleson mom.
In 1996, Tucker’s sister Callie Marshall was born with Alström syndrome, which causes, among other things, the loss of sight and hearing, heart and lung disease, diabetes, the accumulation of excess fat around the abdomen during childhood and stunted growth leading to shorter stature in adulthood.
When Marshall was diagnosed at 6, she was the 121st person worldwide to be identified as having Alström syndrome. At that time, her life expectancy was 12 to 15 years, Tucker said. Marshall doubled that, passing away in July 2024 at 28.
Tucker was 9 when her sister was diagnosed. The preceding years had been frustrating for her parents, she said, as they searched for answers about Marshall’s health problems.
The first symptom Marshall displayed as an infant was an eye twitch. Tucker said her parents were angry when a doctor told them their daughter would eventually lose her sight, and they sought a second opinion. That diagnosis, however, proved true. Marshall would go on to also lose much of her hearing and experience issues with her heart, her liver and her kidneys.
Tucker said her mother initially learned about Alström syndrome through a Google search. That led the family to Jan Marshall (no relation), a pioneering Alström syndrome researcher in Bar Harbor, Maine, who helped diagnose Tucker’s sister.
In infants, Alström syndrome most often reveals itself through vision problems and the children being heavier than normal, said Tucker. Today, there are prenatal and postnatal genetic tests that identify Alström syndrome, but there’s no comprehensive treatment or cure, only ways to address individual symptoms to improve the quality of life. But the estimated life span is still short. Tucker said she knows of no Alström syndrome patient who is older than around 40, and most don’t make it past their 20s.
One of the things Tucker hopes will happen through events like the annual conferences, which occur every three years, is that more people will learn to recognize the symptoms of Alström syndrome, leading to more timely diagnoses.
The conferences also bring together top Alström syndrome researchers, of which there are less than 50 in the world, to discuss the latest findings.
A genotype/phenotype study is underway that will hopefully identify the underlying cause of Alström syndrome at the cellular level, Tucker said. She added that this could lead to a treatment breakthrough in the coming years.
Aside from hosting the clinical symposiums and raising awareness, Tucker said the conferences foster a sense of community among people touched by Alström syndrome. Tucker attended her first conference in 2004, when she was 11, and she said it was the first time she found herself among others who understood what it was like to live with a family member suffering from Alström syndrome.
“It’s a family,” Tucker said.
Leading up to the Fort Worth conference, Tucker is organizing a fundraising dinner and auction at Lost Oak Winery in Burleson. The event will be held Saturday, Feb. 28, which is Rare Disease Day. The dinner is open to all, and the money raised will cover expenses for volunteers who attend the conference in May. These volunteers will act as chaperones and translators for children with Alström syndrome, so they can experience activities around Fort Worth while their parents attend the conference sessions.
It’s less than two years since Marshall passed, but Tucker said leading Alström Syndrome International has given her an outlet for her grief. When asked how she remembers her sister, Tucker described her as a force.
“Callie was a very strong personality,” Tucker said. “She was resilient and brave and very sassy. She was a big personality, and the strongest person I ever met.”
In her own way, Tucker hopes to exhibit those same qualities as she does her part to support research initiatives and connect families with physicians.
The Alström syndrome community is small, and it’s likely no one reading this will ever have to confront the disease. But maybe, just maybe, the right person will hear about the conference in Fort Worth, and a life will be changed. It’s a long shot — a one-in-half-a-million chance, perhaps — but there’s a chance nonetheless.
The 11th Alström Syndrome International Family Conference and Scientific Symposium will be May 21-25 at the Sheraton Downtown Fort Worth, 1701 Commerce St.
The Boots and BBQ for a Cause fundraiser will be Feb. 28 at Lost Oak Winery, 8101 County Road 802, Burleson.
For details, visit alstrom.org.
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Matthew Adams
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