Question: What is (are) Branchiootorenal syndrome ?
Answer: Branchiootorenal syndrome is characterized by birth defects or anomalies of tissues in the neck, malformations of the external ear, hearing loss, and kidney malformations. Symptom and symptom severity can vary greatly from person to person. It can be caused by mutations in the EYA1, SIX1, or SIX5 genes. It is passed through families in an autosomal dominant fashion. Treatment may include surgery to remove the anomalies of the neck (i.e., branchial fistulae or cysts), careful assessment and management of hearing loss, and follow-up by a kidney specialist (nephrologist). In some cases dialysis or kidney transplant may be required.
Source: GARD

Question: What causes Branchiootorenal syndrome ?
Answer: What causes branchiootorenal syndrome? Mutations in the genes, EYA1, SIX1, and SIX5, are known to cause branchiootorenal syndrome. About 40 percent of people with this condition have a mutation in the EYA1 gene. SIX1 and SIX5 mutations are much less common causes of the disorder. There are likely other genes that have not yet been identified that when mutated can cause this syndrome as well.
Source: GARD

Question: What are the treatments for Branchiootorenal syndrome ?
Answer: How might branchiootorenal syndrome be treated? Hereditary hearing loss conditions, in general, tend to be managed by a team that includes an otolaryngologist, an audiologist, a clinical geneticist, a pediatrician, sometimes an educator of the Deaf, a neurologist, and in case of branchiootorenal syndrome, a nephrologist (kidney doctor). Treatment of hearing loss may include determining which aids would be most helpful, for example hearing aids or vibrotactile devices; cochlear implantation may be considered in children over age 12 months with severe-to-profound hearing loss. Early hearing intervention through amplification, surgery, or cochlear implantation may be recommended for children who are at risk to lose their hearing before they learn to speak. People with hereditary hearing loss often require regular follow-up with a hearing specialist such as an audiologist to monitor stability or progression of the hearing loss. Treatment of branchial fistulae or cysts may require surgery. For people with branchiootorenal syndrome and severe kidney malformations or complications, dialysis or kidney transplant may be required.
Source: GARD