Like Father Like Son

Yesterday, we had our first genetics appointment. Although we've had a lot of input from various doctors regarding the genetic side of Theo's condition, this was the first time that we had talked to someone who was fully qualified to comment on the genetics.

We found out that Theo's genetic samples have yet to be submitted for testing as they were waiting for the go-ahead from us to proceed. Now that they have that, the samples are going to be sent to a laboratory which specialises in skeletal dysplasias. The geneticist told us that they might be able to get the work done at Cambridge, but failing that it would need to be sent abroad. The time scale is 2 months in the best case, but could be anything up to 6 months.

The results of Theo's genetic tests should hopefully reveal that he has the gene that causes SEDC/Kniest and so confirm the original diagnosis. If this is the case, it will mean that they have a genetic test which can be conducted at about 12 weeks into pregnancy if that is what we decide to do. In the absence of any such test, early growth scans should be able to pick up indications of a problem.

So far, so good... but now we get to the chance of recurrence. As a back drop to this, the problems associated with Collagen defects (such as SEDC/Kniest) include eyesight, hearing, bone growth, early on-set of arthritis, spine and joint issues, amongst others.

Now as a under-average height, arthritic, half-deaf, flat-footed, talipes-affected, loose-hip jointed kind of guy... this set off a few alarm bells! Although the geneticists we saw whilst Clare was pregnant didn't seem that concerned with my various ailments, it turns out they might have more of an impact than originally thought now that the diagnosis has changed from Achondroplasia to Kniest or SEDC.

It is possible that I have Mosaicism with regards to the collagen defect which effected Theo. As I understand it (and here comes the science part), this would mean that a certain subset of my cells would be affected by the defect and, if this were the case, would account for my one or two problems. If my sperm were effected, it would explain how Theo ended up as he did.

In terms of predicting the likelihood of it happening again, it gets a little tricky. As I understand it (and I probably don't!), if I suffered from this problem, and all my sperm were defect, then that would leave us with a 50% chance of recurrence. If only 1% of my sperm were affected, that would take the percentage down to a half.

Unfortunately, it seems unlikely that they will be able to give me a percentage sperm defect amount and so we may not be able to find the exact chance of it happening again.

But, before we get too ahead of ourselves with the doom and gloom, they haven't said that I have this problem yet. It's just an avenue they think is worth exploring. My issues could be all coincidence. After all, I lost my hearing in one ear when I was 3 so that probably isn't genetic... the arthritis could just be a result of my bad legs. The are going to take x-rays of my long bones, spine, etc and send them to Great Ormond Street for examination. That will give them more of an indication of whether they think I'm affected.

So that's the score. I haven't covered everything off because it gets quite detailed and I don't want to bore people with technicalities! If you want to know more information, drop me a mail and I'll fill you in.

How does this make us feel? A bit despondent, if I'm honest because we were quite hoping that it would just be "one of those things" and we wouldn't have to worry about it again. Also, we're going to have to wait even longer for answers that may be difficult to take and require us to make hard choices.

Nevertheless, we know that God has a plan and that this plan is good. We know that He will help us on this new path and give us the strength to get through it because He's done it before. So, we are in the process of picking ourselves up and getting on with it. Please pray for us, particularly Clare as she's taking this quite hard and had really hoped we could move forward with our family in the near future which seems unlikely now.

I will keep you posted with more news as it happens. Thanks for reading!