Branchio-Oto-Renal (BOR) Syndrome

Branchio-oto-renal (BOR) syndrome is a genetic condition that mainly affects the neck, the ears, and the kidneys. “Branchio” refers to tissues in the side of the neck that come from the branchial arches during early fetal development. “Oto” refers to the ears. “Renal” refers to the kidneys and urinary system. People with BOR can have small pits in front of the ears, abnormal passageways or cysts in the neck (branchial cleft fistulas or cysts), hearing loss of any type (conductive, sensorineural, or mixed), and kidney changes that range from mild size or structure differences to serious kidney problems. The condition is usually inherited in an autosomal dominant way, which means one changed copy of a gene can cause the condition, and a parent has a 50% chance to pass it to each child. However, new (“de novo”) changes can also occur. Three genes are most often involved: EYA1, SIX1, and SIX5. These genes work together to control how the neck, ear, and kidney tissues form before birth. When one of these genes does not work correctly, the development of these organs can be altered, leading to the features seen in BOR. NCBI+2MedlinePlus+2

Branchio-oto-renal (BOR) syndrome is a genetic condition that affects three areas: tissues in the neck called branchial arches, the ears, and the kidneys/urinary tract. People may have small pits or cysts in front of the ears, openings or cysts on the side of the neck, different-shaped outer ears, and hearing loss that can be conductive, sensorineural, or mixed. Kidney problems range from reflux of urine, blockage where the ureter meets the kidney, small or under-developed kidneys, to scarring and—rarely—kidney failure. It is usually inherited in an autosomal dominant pattern, so a parent with BOR has a 50% chance of passing it to each child. There is wide variation, even in one family, so one person may have only ear pits and mild hearing loss while a relative has more kidney problems. Diagnosis is clinical and can be confirmed by finding a pathogenic variant in EYA1 or SIX1 (less often SIX5). Management is tailored to the person’s ears, neck, and kidneys. orpha.net+3NCBI+3MedlinePlus+3

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Other names

• Branchio-oto-renal spectrum disorder (BORSD)

• Branchio-otic (BO) syndrome (similar, but without kidney findings in some people)

• Melnick–Fraser syndrome
  These names appear in clinical references and reflect the range of findings from ear-and-neck features alone (BO) to ear-neck-kidney features (BOR). NCBI+2rarediseases.info.nih.gov+2

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Types

Doctors often use “spectrum” language because people can have different mixes and severities of findings:

1. BOR syndrome – ear/neck plus kidney features.

2. BO syndrome – ear/neck features without documented kidney changes at the time of evaluation (kidneys still need checking).

3. Genetically defined subtypes – changes in EYA1 (the most common), SIX1, or SIX5; very rarely, people have the clinical picture without a detectable change in these genes. These gene-based labels can help with counseling and testing other family members. NCBI+2MedlinePlus+2

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Causes

BOR is a genetic developmental disorder. The “causes” below explain the genetic and biological pathways that lead to the condition rather than lifestyle triggers.

1. Pathogenic variants in EYA1 – most common genetic cause (about ~40–75% across studies). NCBI+1

2. Pathogenic variants in SIX1 – uncommon but well-documented. MedlinePlus+1

3. Pathogenic variants in SIX5 – rare; reported in a small proportion of families. MedlinePlus+1

4. Large deletions/duplications involving EYA1 or its regulatory regions (copy-number variants). NCBI

5. Missense variants that change a single amino acid in EYA1/SIX1/SIX5 and disrupt protein function or binding. PLOS

6. Nonsense/frameshift variants that truncate the protein (loss-of-function). PubMed

7. Splice-site variants that alter RNA processing and protein production. e-ceo.org

8. Regulatory-region variants that reduce normal gene expression during organ development. NCBI

9. Disruption of the EYA1–SIX1 transcriptional complex needed for branchial arch, ear, and kidney formation. MedlinePlus

10. Autosomal dominant inheritance from an affected parent (50% risk to children). PubMed

11. De novo variants (new in the child) in EYA1 or SIX1 in ~10–20% of molecularly confirmed cases. PubMed

12. Mosaicism in a parent or the affected person (variant present in some cells only), explaining variable features in a family. NCBI

13. Allelic conditions (e.g., BO without renal findings) reflecting the same gene pathways with different expressivity. NCBI

14. Modifier genes that fine-tune severity (research suggests variable expressivity beyond the main gene). NCBI

15. Gene dosage effects (too little functional protein due to deletion or disruptive variant). NCBI

16. Developmental pathway disruption of branchial arches (secondary neck structures). NCBI+1

17. Abnormal otic vesicle/ear morphogenesis leading to outer/middle/inner ear differences and hearing loss. NCBI

18. Abnormal nephrogenesis (kidney formation), producing kidney size/structure differences or reflux. SickKids

19. Haploinsufficiency of EYA1 (one working copy is not enough for normal development). NCBI

20. Currently unknown genetic causes in a minority with classic features but no identifiable variant in EYA1/SIX1/SIX5 with today’s tests. NCBI

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Symptoms and signs

1. Preauricular pits or small ear tags in front of the ear. rarediseases.org

2. Branchial cleft cysts or fistulas—small openings or tracts in the side of the neck that can drain fluid or get infected. NCBI

3. Hearing loss—can be conductive, sensorineural, or mixed; one or both ears; may change over time. NCBI

4. Ear shape or structure differences—outer, middle, or inner ear malformations. NCBI

5. Recurrent neck swelling or discharge from branchial tracts. rarediseases.org

6. Kidney size or structure differences (hypoplasia, dysplasia, duplication). SickKids

7. Reflux of urine (vesicoureteral reflux) or urinary tract infections from urinary tract anomalies. SickKids

8. High blood pressure or reduced kidney function in some people with significant renal involvement. SickKids

9. Tinnitus or ear fullness (in some individuals). rarediseases.org

10. Balance problems if the inner ear is affected. NCBI

11. Eardrum or ossicle abnormalities causing conductive hearing loss. NCBI

12. Family history of similar ear pits, hearing loss, neck openings, or kidney issues (but not always). PubMed

13. Wide range of severity—some people have mild ear pits only; others have multiple features. NCBI

14. Onset at birth—features are congenital even if kidney or hearing problems appear later. rarediseases.info.nih.gov

15. Normal intelligence—BOR affects organ development but not cognition by itself. (Clinical overviews do not report cognitive impairment as a core feature.) NCBI

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Diagnostic tests

A) Physical exam

1. Full head-and-neck exam – the clinician looks for ear pits/tags and neck openings, checks for signs of infection or drainage, and examines the mouth and throat. This helps recognize the pattern of ear-and-neck findings typical of BOR. NCBI

2. Ear inspection and otoscopy – the outer ear, ear canal, and eardrum are examined to look for shape differences, wax, or eardrum changes that could affect hearing. NCBI

3. Kidney/urinary focus in general exam – blood pressure, flank tenderness, swelling, and growth in children are checked because kidney involvement can change these. SickKids

4. Family history (three-generation pedigree) – documents relatives with ear pits/tags, hearing loss, renal issues, or neck cysts/fistulas; an autosomal dominant pattern supports BOR. PubMed

B) Manual/bedside tests

5. Tuning fork tests (Rinne/Weber) – quick bedside checks that suggest conductive vs. sensorineural hearing loss and guide formal audiology testing. NCBI

6. Cranial nerve and balance assessment – simple bedside maneuvers (gait, Romberg) screen for vestibular involvement when inner ear structures are affected. NCBI

7. Blood pressure measurement – repeated readings in clinic or at home help detect hypertension caused by kidney disease. SickKids

8. Renal palpation and costovertebral angle tenderness check – looks for discomfort that could reflect urinary tract issues (with imaging and labs to confirm). SickKids

C) Laboratory and pathological tests

9. Urinalysis – screens for blood, protein, or infection; abnormal results suggest kidney or urinary tract involvement needing further work-up. SickKids

10. Serum creatinine and eGFR – simple blood tests that estimate kidney function over time. SickKids

11. Electrolytes and metabolic panel – identifies imbalances related to renal dysfunction or dehydration from infections. SickKids

12. Genetic testing: single-gene or panel sequencing for EYA1, SIX1, SIX5 – detects most disease-causing sequence changes. NCBI+1

13. Copy-number analysis (e.g., MLPA/CNV by NGS, microarray) – finds bigger deletions/duplications missed by sequencing alone, especially around EYA1. NCBI

14. Exome/genome sequencing when panel is negative – catches rare or regulatory changes and clarifies uncertain cases within the BOR spectrum. NCBI

D) Electrodiagnostic / audiologic tests

15. Pure-tone audiometry – measures hearing thresholds across pitches to define degree and type of loss (conductive, sensorineural, or mixed). NCBI

16. Tympanometry and acoustic reflexes – assess middle ear function and eardrum/ossicle movement, helping separate conductive from other causes. NCBI

17. Otoacoustic emissions (OAE) and/or auditory brainstem response (ABR) – objective tests that are especially useful in infants and young children to detect inner ear or nerve pathway involvement. NCBI

E) Imaging tests

18. Renal ultrasound – first-line, painless imaging to look for kidney size, shape, position, and drainage problems. SickKids

19. Temporal bone CT and/or inner ear MRI – show outer/middle/inner ear anatomy, ossicles, cochlea, and vestibular structures; helps plan hearing care or surgery. NCBI

20. Voiding cystourethrogram (VCUG) or renal nuclear scans (e.g., DMSA) when needed – check for reflux or scarring if UTIs or ultrasound findings suggest risk. SickKids

Non-pharmacological treatments (therapies & other care)

These are supportive, team-based measures that are the backbone of BOR care. None change the genes; they reduce symptoms, prevent complications, and protect hearing and kidney function.

1. Early audiology and hearing rehabilitation. Newborn/early childhood hearing testing, repeated through childhood, finds loss early so speech and learning support can start right away. Hearing aids help mild–moderate losses; cochlear implants are considered for severe–profound bilateral sensorineural loss when well-fitted hearing aids don’t give expected progress. Early intervention improves language and school outcomes. NCBI+2entnet.org+2

2. Speech–language therapy. Children with hearing loss benefit from targeted speech and language therapy to build listening, articulation, and classroom communication skills; families learn strategies to support daily communication. Pediatrics Publications

3. Educational supports (IFSP/IEP). Noise-reduced classrooms, FM/remote-microphone systems, captioning, and structured language goals promote learning and inclusion for students with hearing loss. Pediatrics Publications

4. Canaloplasty for ear canal atresia/stenosis. If the external auditory canal is very narrow or absent, surgery may be offered to open the canal and improve conductive hearing and ear hygiene; careful selection and timing reduce restenosis. NCBI

5. Excision of branchial cleft cysts/fistulae. Neck pits, cysts, or draining tracts can become infected or troublesome. Complete surgical removal lowers recurrence and treats infection or cosmetic concerns. NCBI

6. Renal/urinary imaging and surveillance. Ultrasound, DMSA scans, and studies such as VCUG track kidney size, scars, reflux, and obstruction, guiding timely intervention before damage occurs. Follow-up frequency is individualized. NCBI

7. Kidney-protective lifestyle. Blood pressure control, appropriate hydration, avoidance of nephrotoxic medicines, and nutrition advice (e.g., sodium moderation) slow CKD progression if kidney involvement is present. kdigo.org+1

8. UTI prevention behaviors. Timely voiding, proper hydration, and addressing constipation reduce UTI risk in reflux or obstruction; prompt attention to fever/urinary symptoms prevents scarring. NCBI

9. Genetic counseling. Families learn inheritance, variable expression, recurrence risk (50% for each child), and options such as prenatal or preimplantation genetic testing. NCBI

10. Family screening. Relatives may have subtle signs (e.g., ear pits). Targeted clinical exam, hearing tests, and renal ultrasound can catch issues early. NCBI

11. Cochlear-implant candidacy evaluation. Multidisciplinary assessment (audiology, otology, speech, pediatrics) clarifies whether a cochlear implant is indicated and when, including for some single-sided losses in children. entnet.org+1

12. Neck and ear skin care. Good hygiene around preauricular pits and branchial openings and early treatment of any drainage reduce infections while awaiting surgery. NCBI

13. Psychosocial support. Counseling and peer groups help families manage uncertainty and variable severity; specialists can support school accommodations and mental well-being. rarediseases.org

14. Transition planning to adult care. As teens age out of pediatrics, structured handoff to adult nephrology and audiology maintains surveillance and treatment continuity. NCBI

15. Bone and mineral monitoring in CKD. If CKD develops, regular checks of calcium, phosphorus, PTH, and vitamin D guide diet and binder/active-vitamin D use, reducing bone pain and fractures. kdigo.org

16. Blood pressure self-monitoring. Home BP logs help reach targets and spot changes early; tight control protects kidneys and hearing microcirculation. sciencedirect.com

17. Nutrition counseling tailored to CKD stage. Dietitians align protein, sodium, potassium, and phosphorus with CKD severity while protecting growth in children (no protein restriction in kids). kdigo.org+2NIDDK+2

18. Vaccination up to date. Routine vaccines reduce infection risk; in CKD, immunization helps prevent severe illness that can worsen kidney function. Follow national schedules. kdigo.org

19. Reflux/obstruction surgical referral when indicated. For significant vesicoureteral reflux or UPJ obstruction, pediatric urology procedures reduce infections and long-term scarring. NCBI

20. Renal replacement planning if needed. In the rare case of end-stage kidney disease, timely education about dialysis and transplantation improves outcomes; transplant is an option. Iowa Head and Neck Protocols

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Drug treatments

These medicines treat BOR-related problems (hearing complications, infections, CKD, anemia, bone-mineral changes, edema, acid–base issues). Dosing is individualized. Always use pediatric dosing for children and adjust in CKD.

1. ACE inhibitor (enalapril). For proteinuria and hypertension in CKD, ACE inhibitors lower intraglomerular pressure and protein leak, slowing scarring. Typical adult dosing starts low and titrates; pediatric formulations (e.g., enalapril oral solution) exist. Watch for cough, high potassium, and kidney function changes; avoid in pregnancy. Mechanism: ACE blockade reduces angiotensin II and aldosterone. kdigo.org+2FDA Access Data+2

2. ARB (losartan). Alternative when ACE cough occurs; lowers proteinuria and blood pressure via angiotensin II type-1 receptor blockade. Similar kidney-protective goals; boxed warning for fetal toxicity. Side effects include hyperkalemia and creatinine rise. kdigo.org+1

3. Loop diuretic (furosemide). For edema or hypertension in CKD, promotes salt/water excretion by blocking NKCC2 in the loop of Henle. Requires careful titration to avoid dehydration/electrolyte loss; used orally or IV during decompensation. FDA Access Data+1

4. Antibiotics for UTIs (amoxicillin). Used based on culture and local resistance; treats cystitis or pyelonephritis in reflux/obstruction. Mechanism: inhibits bacterial cell wall synthesis. Dose-adjust in CKD; watch allergy and GI upset. (Fluoroquinolones like ciprofloxacin are reserved for specific indications due to safety issues, including pediatric labeling for cUTI/pyelonephritis.) FDA Access Data+1

5. SGLT2 inhibitor (dapagliflozin). In adults with CKD (with or without diabetes), reduces CKD progression and kidney/cardiovascular events by promoting glycosuria/natriuresis and reducing intraglomerular pressure; not a pediatric BOR drug but may be used in eligible adults with BOR-related CKD. Monitor volume status and mycotic infections. PMC+1

6. Phosphate binder (sevelamer carbonate). In dialysis CKD, binds intestinal phosphate to control hyperphosphatemia, protecting bone and vessels; not calcium-based, so lower risk of hypercalcemia. GI upset is common. FDA Access Data

7. Active vitamin D (calcitriol). Treats secondary hyperparathyroidism in CKD by activating vitamin D receptors and lowering PTH; watch calcium and phosphorus to avoid calcification. Oral/IV options exist. FDA Access Data+1

8. Erythropoiesis-stimulating agent (epoetin alfa). For CKD anemia due to low EPO, increases red blood cell production; used with iron as needed. Risks include hypertension and thrombosis; dose to the lowest level that avoids transfusion. FDA Access Data+1

9. Oral sodium bicarbonate. Corrects metabolic acidosis in CKD, which can worsen bone loss and muscle breakdown; dose to maintain serum bicarbonate in goal range, mindful of sodium load. kdigo.org+1

10. Topical antibiotic care for infected pits/tracts (as guided). Short courses may be used for local infection around preauricular pits prior to or after surgical care, guided by culture and ENT assessment. NCBI

11. Analgesia with kidney-safe choices. When pain control is needed (e.g., after surgery), avoid or limit NSAIDs in CKD; use alternatives and renal dosing per clinician guidance. kdigo.org

12. Antihypertensives beyond RAS blockade (as needed). Long-acting calcium channel blockers or beta-blockers are used to reach target SBP when ACE/ARB alone is insufficient; choice individualizes to age/comorbidities. sciencedirect.com

13. Antibiotic prophylaxis in high-risk reflux (select cases). Some children with severe vesicoureteral reflux may receive prophylaxis to reduce febrile UTI risk pending surgery or while growing out of reflux; practice varies by urology assessment. NCBI

14. Iron therapy (oral/IV) in CKD anemia. Restores iron for ESA effectiveness; monitor ferritin and TSAT; avoid iron overload. kdigo.org

15. Vaccination-related medications (e.g., antipyretics). Support comfort post-immunization; ensure vaccine schedules are kept, especially in CKD. kdigo.org

16. Antibiotics for peri-operative prophylaxis (ENT/urology). Short, targeted regimens reduce infection risk during canaloplasty, branchial tract excision, or urologic surgery. NCBI

17. Topical ear therapies (as appropriate). For otitis externa or canal care around stenosis, clinician-directed drops (acidifying/antimicrobial) may be used; avoid ototoxic agents with TM perforation. NCBI

18. Antiemetics when uremia causes nausea (advanced CKD). Symptom care to maintain nutrition and quality of life in conservative management or while awaiting RRT. kdigo.org

19. Vitamin D supplementation (nutritional D) if deficient. Separate from calcitriol; repletion supports bone health in CKD earlier stages; monitor labs to avoid hypercalcemia. kdigo.org

20. Bowel regimen in children with reflux/UTI risk. Treating constipation reduces bladder pressures and UTI risk; use safe stool softeners per pediatric guidance. NCBI

Important: Many drugs above are general CKD/UTI supports, not BOR-specific treatments. Pediatric dosing and CKD dose-adjustment are essential, and some (e.g., SGLT2 inhibitors) are adult-only. Always follow specialist advice. kdigo.org

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Dietary molecular supplements

1. Cholecalciferol (Vitamin D3). Correcting deficiency supports bone health and may reduce secondary hyperparathyroidism in early CKD; dosing is based on serum 25-OH D and CKD stage, with close calcium/phosphorus monitoring. kdigo.org

2. Elemental iron (oral). For iron-deficiency anemia or to support ESA therapy; dosing targets ferritin/TSAT goals, balancing GI tolerance with efficacy. kdigo.org

3. Folic acid (B9) and B-complex. Replace deficits and support erythropoiesis; in CKD, water-soluble vitamins may be low with dietary restriction. Avoid excess fat-soluble vitamins without indications. ajkd.org

4. Omega-3 fatty acids. Dietitian-supervised omega-3 intake may modestly lower triglycerides and inflammation markers in CKD; choose products with known purity and consider bleeding risk. kdigo.org

5. Calcium (when prescribed). Used carefully in CKD—excess can cause vascular calcification; dietary calcium timing may support phosphorus control alongside binders. kdigo.org

6. Probiotics (selected strains). Investigational in CKD for uremic toxin modulation; any use should be clinician-supervised, especially in immunocompromised states. kdigo.org

7. Citrate (as diet/alkali strategy). Fruits/vegetables or prescribed alkali can help metabolic acidosis management and kidney stone risk when present; in CKD this must be tailored. kdigo.org

8. Protein supplementation in children with CKD (if needed). Because children should not be protein-restricted, supplements may be used to meet growth targets when intake is low. kdigo.org

9. Sodium bicarbonate tablets/powder (as a supplement). Restores bicarbonate in metabolic acidosis of CKD; dose to target serum levels and avoid fluid overload. kdigo.org

10. Plant-forward protein swap. Dietitians may shift some animal protein toward plant sources to reduce phosphorus and urea load while maintaining adequate protein—especially for adults with CKD. MDPI+1

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Immunity-booster / regenerative / stem-cell” drugs

There are no FDA-approved “immunity boosters,” regenerative drugs, or stem-cell therapies that correct BOR gene defects (EYA1/SIX1/SIX5) or regrow malformed ear/kidney structures in this condition. Experimental inner-ear gene therapy is advancing for other genetic deafness (e.g., OTOF) with early clinical reports, but this is not yet approved for BOR, and participation is limited to clinical trials with strict eligibility. Supportive measures like vaccination, nutrition, CKD management, and timely surgery are the current standards. If you see clinics advertising stem-cell cures for BOR, be cautious and ask your specialist. The Guardian+3NCBI+3PMC+3

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Surgeries (procedure & why done)

1. Branchial cleft cyst/fistula excision. Removes neck pits/tracts/cysts that are infected, draining, or cosmetically concerning; complete resection lowers recurrence and clears infection. NCBI

2. Canaloplasty / atresia repair. Opens a narrowed or closed ear canal to improve hearing/ear hygiene; selected carefully and often combined with audiologic rehabilitation. NCBI

3. Cochlear implantation. For bilateral severe–profound sensorineural hearing loss not meeting developmental goals with optimized hearing aids; improves access to sound and language development. entnet.org

4. Anti-reflux urologic surgery (e.g., ureteral reimplantation). Reduces febrile UTIs and scarring in significant vesicoureteral reflux not controlled conservatively. NCBI

5. Pyeloplasty for UPJ obstruction. Relieves blockage where the ureter meets the kidney, protecting kidney tissue and function. NCBI

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Preventions

1. Newborn and periodic hearing screening, especially with family history. NCBI

2. Early audiology + speech therapy to prevent speech/language delay. Pediatrics Publications

3. Regular renal ultrasound and urine testing in diagnosed individuals. NCBI

4. Blood pressure control to kidney-protective targets. sciencedirect.com

5. UTI prevention habits (hydration, timed voiding, treat constipation). NCBI

6. Avoid nephrotoxins (non-essential NSAIDs, certain contrast unless necessary). kdigo.org

7. Vaccinations per schedule. kdigo.org

8. Nutrition tailored to CKD stage (dietitian input, sodium awareness). NIDDK

9. Family genetic counseling and screening for early detection. NCBI

10. Planned transitions from pediatric to adult specialty care. NCBI

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When to see a doctor

See your clinician promptly for any of the following: new or worsening hearing loss, ear drainage, recurrent ear pain, a new or draining neck lump, fever plus urinary symptoms (painful urination, urgency, flank pain), swelling of legs/face, reduced urine, blood in urine, rising blood pressure, headaches related to high BP, or poor growth/appetite in a child. A diagnosis of BOR warrants regular follow-up with ENT/audiology, nephrology/urology, and genetics even if you feel well, because kidney and hearing changes can be silent at first. NCBI

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What to eat and what to avoid

What to eat: plenty of whole foods with guidance from a dietitian—fruits/vegetables appropriate to your potassium goal, whole grains, and lean proteins. In adults with CKD, aim for about 0.8 g/kg/day of protein unless your care team tells you otherwise; in children with CKD, do not restrict protein—their intake should support growth. Use herbs, lemon, and spices instead of salt. Choose water as your main drink. NIDDK+2MDPI+2

What to limit/avoid: excess sodium (goal often ≤2.3 g/day), processed foods high in phosphate additives, unmonitored high-potassium foods if your labs run high, and unnecessary NSAIDs. If you have reflux/UTI risk, keep regular bowel habits and hydration. Your plan should be individualized to labs, age, and CKD stage. NIDDK+1

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Frequently asked questions (FAQs)

1) Is there a cure for BOR?
No. Current care targets problems in the ears, neck, and kidneys to protect function and quality of life. Gene changes remain, but outcomes are often good with early, tailored care. NCBI

2) Which genes cause BOR?
Most often EYA1, less commonly SIX1, and rarely SIX5. A molecular diagnosis helps with counseling but is not required if clinical criteria are met. NCBI

3) How is BOR inherited?
Autosomal dominant: a parent with BOR has a 50% chance to pass it to each child. Some cases are new (de novo) variants. NCBI

4) Does hearing loss get worse over time?
It can be stable or progressive; monitoring allows timely hearing aid adjustments or cochlear-implant evaluation. NCBI

5) Can a person have BOR without kidney problems?
Yes. Some people meet criteria based on branchial/ear findings alone; kidney involvement varies widely. NCBI

6) Do all neck pits or ear pits need surgery?
No. They are removed when infected, draining, or bothersome; otherwise they can be watched. NCBI

7) When are cochlear implants considered?
For bilateral severe–profound sensorineural loss not meeting developmental goals with optimized amplification; candidacy is multidisciplinary. entnet.org

8) How often should kidneys be checked?
Your team sets a schedule, often with periodic ultrasound, urine protein checks, and BP reviews based on age and findings. NCBI

9) Will BOR always lead to kidney failure?
No. Many people have mild findings; a subset progresses depending on the type and severity of anomalies. Surveillance and early treatment reduce risks. NCBI

10) Are SGLT2 inhibitors or ACE/ARBs “BOR drugs”?
They are CKD drugs, not BOR-specific; they are used if you have CKD with proteinuria/hypertension and meet age/indication criteria. kdigo.org+1

11) Should children with CKD eat less protein?
No. Children should not be protein-restricted because of growth needs; dietitians tailor adequate intake. kdigo.org

12) Is inner-ear gene therapy available for BOR?
Not yet. Early successes exist for other genetic deafness (e.g., OTOF) in trials, but there are no approved BOR gene therapies. The Guardian+1

13) Can adults with BOR have healthy pregnancies?
Yes, with preconception counseling; avoid ACE/ARBs during pregnancy and plan kidney/hearing follow-up. FDA Access Data

14) Should relatives be tested?
Yes—clinical screening (ears, hearing, kidneys) and, when a familial variant is known, targeted genetic testing help detect silent issues early. NCBI

15) Where can I read a clinician-level summary?
See GeneReviews for up-to-date diagnostic criteria and management, plus links to related resources. NCBI

Disclaimer: Each person’s journey is unique, treatment plan, life style, food habit, hormonal condition, immune system, chronic disease condition, geological location, weather and previous medical  history is also unique. So always seek the best advice from a qualified medical professional or health care provider before trying any treatments to ensure to find out the best plan for you. This guide is for general information and educational purposes only. Regular check-ups and awareness can help to manage and prevent complications associated with these diseases conditions. If you or someone are suffering from this disease condition bookmark this website or share with someone who might find it useful! Boost your knowledge and stay ahead in your health journey. We always try to ensure that the content is regularly updated to reflect the latest medical research and treatment options. Thank you for giving your valuable time to read the article.

The article is written by Team RxHarun and reviewed by the Rx Editorial Board Members

Last Updated: November 02, 2025.