Margie Antequera, from College Point, Queens, has two twin boys — John and Anthony, both 5. Though Anthony is a perfectly healthy child, John has Angelman syndrome.

When John was 2, he was admitted to Cornell Medical Center with swine flu, and almost died, said Antequera. Like Allie, doctors couldn’t determine his illness. For years, she also thought her son had cerebral palsy.

It wasn’t until earlier this year when Antequera noticed one of John’s kindergarten classmates, who was exhibiting similar symptoms as her son. She spoke to his parents, and learned about Angelman syndrome. After conducting her own research, she was convinced her son had the disorder, and voiced her opinion to doctors — her suspicions were correct.

It was with enormous relief, said Antequera, that she finally knew what was wrong with her son. But the key, she added, now lies in raising awareness, so funds can be raised to aid medical research.

“You can have a bad day, and you see his face, and it’s all smiles,” Antequera said of her son.