Before Kai went into surgery on Friday, the geneticist held an impromptu conference with us. He told us that he is fairly certain (about 90%) that he has pinpointed what is going on with Kai. He then told us about an extremely rare (by rare I mean less than 50 cases ever reported world-wide) condition called Marshall-Smith Syndrome. There is no way to test for this condition because the gene has not yet been identified. They think it is caused by a gene mutation, but in all but one of the cases, the chromosomes have all been tested and come back normal. There have been no correlation with any of the parents, family history, occupation, parental age, etc. It is one of those random mutations that seem to happen. --How sick I am of that word,
random. We have a better chance of winning the lottery,
twice, then having this happen to us, but here we are.
The geneticist gave us two research articles on the syndrome. If you would like to read the articles for yourself, this is the link for the more comprehensive article:
http://onlinelibrary.wiley.com/doi/10.1002/ajmg.a.33709/abstract. There is a pdf file that you can click on in the right hand section that says "article tools" in which you can read the full article, or you can click on the pdf at the end of the abstract. For those of you who don't want to read the technical jargon, or just don't have the time, I will give you a condensed version.
Basically, (this summary is taken from the abstract of the other article) Marshall-Smith syndrome (MSS) is
a distinct malformation syndrome characterized by accelerated skeletal maturation, relative failure to thrive, respiratory difficulties, mental retardation, and unusual facies, including prominent forehead, shallow orbits, blue sclerae, depressed nasal bridge, and micrognathia. ..... Our study demonstrates an increased rate of nontraumatic fractures and other bony and connective tissue abnormalities that support the hypothesis that MSS should be considered an osteochondrodysplasia. In addition, long-term survival beyond infancy is possible if respiratory problems are expectantly and aggressively managed. © 2005 Wiley-Liss, Inc. (The link is:
http://onlinelibrary.wiley.com/doi/10.1002/ajmg.a.30580/abstract).
I will try to put it more in layman's terms. Basically, the greatest risk is the respiratory issue. Most of the children who have this syndrome die in early childhood (by age three) because of respiratory illnesses such as pneumonia. We asked the doctor what is the best way to help prevent that, and he said what we are doing, putting in the trache. There is evidence that the children can live to adulthood. There is one female who is currently in her 30's, and a couple of people in their teens. Speech is possible, but very limited; in fact, most only say a few words if they do speak. The 30 year old didn't say her first word until she was ten, and didn't walk until she was nine. Many have never walked or talked. The earliest child who walked was at two years old, and the earliest first word was at 36 months old. However, despite the developmental delays and the mental retardation, the children with MSS are described as having a happy demeanor and enjoying social interactions with friends and family.
Another issue is with the bones, but we haven't really had a chance to address that yet with the doctor. According to the articles, every child exhibited very advanced bone age for their respective age. Examples include "patient 1" who at birth had a bone age of a 3 1/2-4 year old. At 22 months, her bone age was that of a 5 9/12 year old. "Patient 2" had a bone age of a 3 year old at 2 weeks old. Additionally, many of the children's bones bowed over the years.
Kai's age has been under debate as well. He was born at 34 weeks, but according to his bone density, it showed he was 36 weeks along. According to the date of my last period, he was only 33 weeks, but the ultrasound from my first prenatal visit showed he was a week bigger developmentally (that was overall growth, not just from his bones though), so we went with that. So, there has been a debate as to whether Jeremy was born at 33, 34, or 36 weeks. The main consensus is the 34 weeks gestational age.
We have been asked to participate in research for this syndrome because it is so rare and there is so little data on it. We have accepted and hope to be able to add to the knowledge for this condition which will help future children with this syndrome.
As with all syndromes, there is variability within the syndrome. So, while having the diagnosis is in a way devastating because of all the implications, we are still hopeful that with early intervention we can help Kai live longer and have a richer life on this earth.