Carol Naquin of Humble, Texas, says her 18-year-old son Jonathan is a quiet kid who loves computers and video games. Her 16-year-old son Christopher, the outgoing one, loves dirt bikes, hunting, jet skiing and snowboarding.
As different as the two brothers are, Naquin said they share a rare, life-threatening disorder known as Alport Syndrome.
Naquin said their disease was discovered this past summer after years of missed chances. The first chance came even before the two brothers were born, Naquin recalled.
"When I was 2 the doctors found protein and blood in my urine. They did many tests over the years but they were never able to explain it," Naquin noted.
Fast forward to when Jonathan entered third grade and Christopher entered first grade. Both experienced profound, unexplained hearing loss in both ears. The doctors were puzzled but simply fitted the boys with hearing aids and sent them on their way.
Today at 1 p.m. ET, Dr. Richard Besser, ABC News' chief health and medical correspondent, will lead a tweet chat about identification, treatment and cure of rare disorders through programs of education, advocacy, research, and service. We'll be joined by the National Organization of Rare Diseases and the Alport Syndrome Foundation as well as hundreds of organizations that represent individual orphan diseases.
Through their childhood both boys consistently tested positive for protein and blood in their urine, just like their mother. They underwent a battery of examinations, but each time nothing turned up.
Finally last summer, Naquin started to worry about Jonathan's appearance. He was exceptionally pale and at six-feet two-inches tall, he weighed just 129 pounds. When she brought her concerns to his pediatrician, he suspected cancer and immediately sent him to nearby Texas Children's Hospital.
"That's what finally set things in motion," Naquin said.
Naquin said the hospital refused to admit Jonathan at the time. Instead they sent the family home with a printout explaining Alport Syndrome. Up to that point, the disease had never been mentioned, she said.
Over the next few days, as they waited to touch base with Jonathan's doctor, Naquin said they learned everything they could about Alport Syndrome.
They discovered that Alport is a rare genetic disorder that attacks the connective tissue of the kidneys. The first symptoms are blood and high protein levels in the urine. Because the ears and eyes share a similar type of connective tissue with the kidneys, the condition often causes hearing loss and changes to eye structure.
Based on family history, Naquin was almost certainly the carrier of the disease. Left untreated, Alport leads to kidney failure and death.
"When they tell you your child has a rare disease you know nothing about and then they send you to the Internet, I can't describe the raw emotion," Naquin said. "I felt fear, guilt, anxiety. It was devastating."
Ultimately tests confirmed that both boys had Alport Syndrome. Doctors determined that Jonathan's kidneys were failing fast and that he needed a kidney transplant as soon as possible. Last week, he was placed on the organ transplant list at St. Luke's Medical Center in Houston, Naquin said. Dozens of family members and friends have also been tested to see if they are a match.