Microtia is an abnormal ear formation, usually found at birth.

There does seem to be a family connection in some cases, although most appear to arise without any family history.

The only gene that has been identified with microtia is associated with Treacher Collins syndrome (TCOF1) which is quite different from the DNA mismatch repair genes that cause Lynch syndrome (MLH1, MSH2, MSH6, and PMS2).

There are probably other inherited genetic mutations for microtia, but I can’t find any.

I would like to know if there is an association between Microtia and Lynch Syndrome?

Thank you.