Sorry for my late response, I've been working long hours. Hcm with my understanding studs are able to be used, although it carries risk of it being passed on. Since normally HCM appears in older cats, and this is a kitten she believes he has two or more genetic mutations that would cause it. I'm not one for hear say. But there is a breeder who I spoke with who has heard numerous complaints about her. I also have a neighbor who bought from her, shortly after it passed away. There was thread created about her on here, also with a few people that had kittens pass away, or have heard stories. That just sounds like too much of a coincidence. Also like the original person that created that thread stated that when she was having issues she wouldn't answer her phone, or reply to text. When I notified her about the situation the first time one month after getting him I took him to the vet, found a murmur but she assured me not to worry, it would go away. Also before I purchased him she stated that he had been checked by a vet. Now she says she didn't and she gave him his first round of shots. That's quite the story change and sounds fishy. 3 people on that thread noticed caughing, a sign of HCM. So I will notify them of my findings. On another note, on her site she says she is registered with tica, that's a lie. I used to breed bearded dragons, chameleons, and frilled dragons. I always was aware of the history of each of my animals, I new at least 6 generations back history. Also if my buyer had any issues, I would make sure to work the problem out, immediately. She hasn't texted me other than, "poor baby." In my opinion she is not a responsible breeder, her ignoring clients with kittens that have medical issues within the first year is madness. Her health guarantee at this point is non-existent. Not only that, it's unethical to be breeding animal when you know, and have a history of selling sick kittens. She hasn't offered me a new kitten. Diesel, my baby needs to be taken care of properly. I highly doubt she would be taking him to the vet.