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EYA1 Gene Branchiootorenal Syndrome Type 1 NGS Genetic Test

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EYA1 Gene Branchiootorenal Syndrome Type 1 NGS Genetic Test

Short Name: EYA1 BOR1 NGS Genetic Test

Also known as: BOR1 Genetic Test, Branchiootorenal Syndrome Type 1 NGS Test, EYA1 Mutation Analysis

EYA1 Gene Branchiootorenal Syndrome Type 1 NGS Genetic Test test available at DNA Labs India for ₹20,000. Uses Next Generation Sequencing (NGS) on Blood or Extracted DNA or One drop Blood on FTA Card samples. Results in Reports are issued within 3 to 4 weeks after the sample reaches the laboratory.. Free home collection in 300+ cities across India.

NGS Genetic TestAll Age Groups🏠 Home Collection

🩺 Medically Reviewed By

Overview

The purpose of this test is to identify disease-causing sequence variants in the EYA1 gene that are associated with Branchiootorenal Syndrome Type 1. It is designed to confirm or exclude a suspected clinical diagnosis, support reproductive decisions, and enable cascade testing of family members when a pathogenic variant is found.

Test Code
3780
Price
₹20,000
Sample Type
Blood or Extracted DNA or One drop Blood on FTA Card
Result Time
Reports are issued within 3 to 4 weeks after the sample reaches the laboratory.
Fasting Required
No
Method
Next Generation Sequencing (NGS)
Step 1

Sample Collection

No fasting is required. Prior genetic counseling is strongly recommended to review family history, understand the purpose of the test, and provide informed consent. Please carry a valid ID and any available medical records.

Method: Venipuncture / FTA card blood spot

Step 2

Laboratory Analysis

A small blood sample will be collected by venipuncture, or a blood spot may be placed on an FTA card. The procedure takes only a few minutes. You may feel slight discomfort at the puncture site.

Step 3

Report Delivery

No specific precautions are needed after sample collection. You can resume normal activities immediately. The laboratory will send the report through the chosen delivery method once testing is complete.

Timeline: Reports are issued within 3 to 4 weeks after the sample reaches the laboratory.

Patient Instructions

1
Before the Test:No special preparations such as fasting are required. However, the ordering clinician may request a blood count or imaging studies to support the clinical diagnosis.
2
During the Test:The test involves a simple blood/saliva/FTA card sample collection. The sample is shipped to the DNA Labs India reference laboratory for NGS analysis.
3
After the Test:After the test, a genetic counselor or physician will explain the report and its implications. For reproductive planning or family screening, follow-up consultation is recommended.

About This Test

Who Should Get This Test

The purpose of this test is to identify disease-causing sequence variants in the EYA1 gene that are associated with Branchiootorenal Syndrome Type 1. It is designed to confirm or exclude a suspected clinical diagnosis, support reproductive decisions, and enable cascade testing of family members when a pathogenic variant is found.

How to Prepare

  • Attend the genetic counseling session before testing
  • Bring referral notes or test requisition from your physician
  • Ensure the sample is labeled correctly
  • For FTA card, allow the blood spot to dry completely before packing

Doctor's Notes

Reviewed by — MBBS, MD (Medical Genetics) · Reg. No. 8532

"A positive EYA1 result has important implications for family members and reproductive planning. Genetic counseling should be integrated into the testing pathway before and after the test."

Last medically reviewed: September 7, 2026

Test Parameters & Specifications

Sample TypeBlood or Extracted DNA or One drop Blood on FTA Card
Sample VolumeOne drop blood on FTA card / whole blood / extracted DNA as per laboratory requirement
ContainerEDTA vacutainer / sterile tube / FTA card
Collection MethodVenipuncture / FTA card blood spot

Sample Stability

Whole blood in EDTA: stable for 24-48 hours at 2-8°C
FTA card blood spot: stable at room temperature for several weeks
Extracted DNA: stable at -20°C for long-term storage
Sample Rejection Criteria:
  • Hemolyzed or clotted blood sample without anticoagulant
  • Insufficient sample quantity
  • FTA card improperly dried or stored in a plastic bag while wet
  • Missing informed consent or requisition form

Understanding Your Results

This test result should be interpreted by a clinical geneticist in the context of clinical findings, family history, and other laboratory investigations.
📊

Pathogenic or likely pathogenic variant detected in EYA1

Consistent with a genetic diagnosis of Branchiootorenal Syndrome Type 1. Genetic counseling is recommended for the patient and at-risk family members.

📊

No pathogenic variant detected in EYA1

No causative EYA1 mutation was identified by this NGS assay. Other genes or non-genetic causes should be considered if clinical suspicion remains.

📊

Variant of uncertain significance (VUS) detected

The variant is not currently classified as pathogenic or benign. Additional family studies and further clinical evaluation may help clarify its significance.

⚠️ When to Consult a Doctor:

Consult a clinical geneticist, nephrologist, ENT specialist, or obstetrician for genetic counseling if you or a family member has hearing loss, kidney abnormalities, preauricular pits, branchial cysts/fistulae, or a known family history of BOR1.

Limitations

  • This NGS test is targeted to the EYA1 gene and does not sequence the entire genome or other BOR-related genes
  • Large structural rearrangements, deep intronic variants, and some large deletions/duplications may not be reliably detected by standard NGS
  • A negative result does not exclude a clinical diagnosis of BOR1 if the condition is due to another gene or a variant type not covered by this assay
  • Interpretation requires correlation with clinical features and family history

Risks & Considerations

  • No significant physical risk from a blood draw
  • Minor bruising or discomfort at the needle site
  • Psychological impact of test results
  • Potential familial implications of genetic findings

Interfering Factors

  • Poor DNA quality or quantity due to improper sample storage
  • Contamination of sample with other biological material
  • Sample mix-up or incorrect labeling
  • Incomplete sequencing coverage of certain GC-rich exons
  • Presence of a hematologic malignancy or prior bone marrow transplant causing mixed DNA profile

Frequently Asked Questions

What is Branchiootorenal Syndrome Type 1?
Branchiootorenal Syndrome Type 1 (BOR1) is a rare genetic disorder caused by mutations in the EYA1 gene. It affects development of the ears, throat, and kidneys, leading to features such as hearing loss, kidney abnormalities, and malformations of the neck and ears.
What does the EYA1 NGS genetic test detect?
The test uses Next Generation Sequencing to detect mutations in the EYA1 gene, including small sequence changes in the coding exons and splice-site regions. This helps identify the genetic cause in individuals suspected to have BOR1.
Who should get the EYA1 gene test?
The test is recommended for individuals with clinical features of BOR1, including hearing loss, kidney malformations, preauricular pits, branchial fistulae, neck/ear abnormalities, or a family history of a known EYA1 mutation, after clinical and genetic counseling.
How is the sample collected for this genetic test?
The sample can be blood collected in an EDTA vacutainer, extracted DNA, or one drop of blood on an FTA card. No fasting is required.
Is fasting required before the EYA1 NGS genetic test?
No, fasting is not required. This is a DNA-based genetic test, and food or medication intake does not affect the result.
What is the cost of the EYA1 gene Branchiootorenal Syndrome Type 1 NGS test at DNA Labs India?
The test costs INR 20,000. DNA Labs India also provides free home sample collection for online bookings, and the discounted price across India is Rs 20,000.
How long will it take to get the NGS genetic test report?
The results are typically available within 3 to 4 weeks after the sample is received in the laboratory.
What kind of results will I receive?
The report will state whether a pathogenic, likely pathogenic, benign, likely benign, or variant of uncertain significance is present in the EYA1 gene. A genetic counselor or physician will interpret the result in the context of your symptoms and family history.
Can a negative EYA1 test rule out Branchiootorenal Syndrome Type 1?
A negative result in the EYA1 gene makes BOR1 less likely, but it cannot completely exclude the condition if the clinical picture is very suggestive. Other genes and non-genetic causes may need to be considered.
Is genetic counseling needed before testing?
Yes, genetic counseling is strongly recommended. It helps explain the benefits and limitations of testing, assesses family history, and ensures informed consent is obtained.
Does this test detect all types of genetic mutations?
No. This targeted NGS test detects small sequence variants in the EYA1 gene. Large deletions, duplications, deep intronic variants, or structural rearrangements may require different testing methods.
Is home sample collection available for this test?
Yes, DNA Labs India offers free home sample collection for online bookings across India, including Mumbai, Delhi, Bangalore, Hyderabad, Chennai, Kolkata, and other major cities.
Worried about the process? Our certified phlebotomists collect thousands of samples every month across India. The process takes under 5 minutes and is virtually painless. Questions? Message us on WhatsApp — we're here 7 days a week.

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