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Rapid Genomic Testing Aids Diagnosis and Treatment for Child with Rare Genetic Syndrome

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Abel, born prematurely at 32 weeks and five days, faced critical health challenges from birth. Admitted to the Neonatal Intensive Care Unit (NICU) at The Children’s Hospital at Westmead (CHW), he required urgent breathing support. At just six weeks old, he underwent open heart surgery for a PDA ligation to address severe pulmonary complications. Despite these intensive interventions, the underlying cause of his severe illness remained unclear.

Unraveling the Mystery: Rapid Genomic Diagnosis

Dr. Alan Ma, Clinical Geneticist at CHW, initiated rapid genomic testing. This crucial step led to a diagnosis of Cantu syndrome, a rare genetic condition affecting multiple body systems. The diagnosis brought much-needed clarity for Abel's family.

The diagnosis provided clarity for Abel's family, as his mother, Melanie, noted it offered relief by explaining his symptoms.

Cantu syndrome is caused by a rare genetic variant, with fewer than 100 diagnoses worldwide at the time Abel was diagnosed. Research suggested that glibenclamide, a diabetes medication, could potentially manage the syndrome by targeting specific cellular channels. Abel began this experimental therapy under close supervision and was discharged home after six months.

A Long Road to Recovery

Abel's early years included complex medical needs. He suffered from low muscle tone, requiring ongoing allied health support. He relied on tube feeding until 11 months, later transitioning to a gastrostomy. Demonstrating remarkable resilience, he overcame oral aversion and learned to eat independently.

He also required BIPAP breathing support for an extended period, which was gradually phased out. Chronic lung disease caused frequent hospital admissions in early childhood, though these have since reduced significantly. He was later diagnosed with global developmental delay.

Thriving Today: A "Very Normal Life"

Now eight years old, Abel engages enthusiastically in a range of activities. He enjoys comic books, video games, bike riding, and tennis. At school, he participates in garden club, sports, and library time, receiving support for auditory processing and vision.

His mother, Melanie, stated that Abel now lives a "very normal life."

The Power of Early Diagnosis

Dr. Ma highlighted that early diagnosis and treatment can significantly impact survival and long-term outcomes for children with rare diseases. Abel's case profoundly underscores the value of rapid genomic testing in guiding care and opening avenues for therapies that might otherwise be overlooked.

Efforts are ongoing to expand access to expert genetics services and testing across NSW and Australia. The goal is to ensure equitable opportunities for children with rare conditions, helping them access life-changing diagnoses and treatments.