If the one clearly fucked up receptor copy is sufficient for your “symptoms”, it seems pretty likely that one of your parents should have them too. I think there is no reason to expect a denovo mutation to be particularly likely in your case (unlike in cases that lead to severe disfunction). And of course you can check for that by sequencing your parents.
So my money would be on the second copy also being sufficiently messed up that you have basically no fully functioning oxytocin receptors. If you have siblings and you are the only odd one in the family, you could make a pretty strong case for both copies being messed up, by showing that you are the only one with the combination of frameshift in one copy and particular SNPs in the other. (If you are not the only odd one you can make an even stronger case).
If the one clearly fucked up receptor copy is sufficient for your “symptoms”, it seems pretty likely that one of your parents should have them too. I think there is no reason to expect a denovo mutation to be particularly likely in your case (unlike in cases that lead to severe disfunction). And of course you can check for that by sequencing your parents.
So my money would be on the second copy also being sufficiently messed up that you have basically no fully functioning oxytocin receptors. If you have siblings and you are the only odd one in the family, you could make a pretty strong case for both copies being messed up, by showing that you are the only one with the combination of frameshift in one copy and particular SNPs in the other. (If you are not the only odd one you can make an even stronger case).