Grace Wilsey was born with NGLY1 deficiency, which is caused by two mutations in the NGLY1 gene.

STORY HIGHLIGHTS

(CNN) -- What do you do when your baby lies limp in your arms, staring blankly into the distance while never crying?

What do you do when tests show signs of liver damage and your baby's seizures won't stop, but doctors can't tell you what's wrong or how to fix it?

Thanks to the Human Genome Project, which was completed in 2003, identifying new genetic mutations has gotten easier and cheaper. But geneticists often struggle to find patients who share these rare DNA quirks. Studying multiple patients with the same gene mutations and similar symptoms is crucial to identifying a new genetic disorder.

That's why a paper published Thursday in the journal Genetics in Medicine is so remarkable.

The paper identifies NGLY1 deficiency as an inherited genetic disorder, caused by mutations in the NGLY1 gene. The researchers have confirmed eight patients with these mutations who share several symptoms, including developmental delays, abnormal tear production and liver disease.

And they credit an "Internet blog" with bringing the patients and scientists together.

Grace's genome

Grace Wilsey's parents knew something was wrong right away. Their newborn daughter was lethargic. Her eyes seemed hollow and unfocused. She refused to eat. Doctors at the hospital ran multiple tests, but couldn't come up with a diagnosis.

Go here to read the rest:
New disorder: Kids who don't cry

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