NASHVILLE, TN (AP) - A Nashville child who was born with a severe genetic disorder that prevented her bones from growing properly is improving after an experimental treatment.

The Tennessean reports Janelly Martinez-Amador's bones could not even be seen on an X-ray. She had to be on a ventilator because she didn't have the ribs to support breathing.

But at the age of 2 years and 8 months, she entered a clinical trial at Monroe Carell Jr. Children's Hospital at Vanderbilt.

After almost a year of treatment, Janelly was able to move all her limbs. After 18 months of treatment, doctors could see ribs forming.

Although she will soon turn 7, she's still the size of a toddler, but her parents and doctors are hopeful. Her bones have just begun to grow.

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