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EPB41L1 Gene Mental retardation, autosomal dominant type 11 NGS Genetic Test

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EPB41L1 Gene Mental retardation, autosomal dominant type 11 NGS Genetic Test

Short Name: EPB41L1 NGS Genetic Test

Also known as: EPB41L1 Gene Mutation Test, MRD11 Genetic Test, EPB41L1 NGS Panel, EPB41L1 Intellectual Disability Genetic Test

EPB41L1 Gene Mental retardation, autosomal dominant type 11 NGS Genetic Test test available at DNA Labs India for ₹20,000. Uses Next Generation Sequencing (NGS), Sanger sequencing for variant confirmation on Blood or Extracted DNA or One drop Blood on FTA Card samples. Results in Samples are processed within 3 to 4 weeks from the date of sample receipt at the laboratory.. Free home collection in 300+ cities across India.

NGS Genetic Test🏠 Home Collection

🩺 Medically Reviewed By

Overview

The primary purpose of this NGS genetic test is to identify pathogenic variants in the EPB41L1 gene in individuals presenting with intellectual disability or developmental delay. Confirmation of a genetic etiology assists clinicians in establishing a definitive diagnosis of MRD11, offering prognostic information, enabling appropriate supportive care, and informing family members about recurrence risks. Additionally, it helps in differentiating MRD11 from other overlapping neurodevelopmental disorders.

Test Code
4225
CPT Code
81419
ICD Code
F70-F79
Price
₹20,000
Sample Type
Blood or Extracted DNA or One drop Blood on FTA Card
Result Time
Samples are processed within 3 to 4 weeks from the date of sample receipt at the laboratory.
Fasting Required
No
Method
Next Generation Sequencing (NGS), Sanger sequencing for variant confirmation
Step 1

Sample Collection

No special preparation or fasting is required. Provide a detailed clinical history and family pedigree if available. A genetic counseling session is recommended prior to testing.

Method: Blood draw / Buccal swab / FTA card spot

Step 2

Laboratory Analysis

Blood sample will be collected in an EDTA vacutainer. If using FTA card, a drop of blood will be placed on the card. Buccal swabs may be collected as per procedure.

Step 3

Report Delivery

No post-collection restrictions apply. The sample will be transported to the laboratory for processing. Results will be released after 3 to 4 weeks.

Timeline: Samples are processed within 3 to 4 weeks from the date of sample receipt at the laboratory.

Patient Instructions

1
Before the Test:No fasting or special preparation is required. Attend a genetic counseling session to discuss the benefits, limitations, and possible outcomes of the test. Provide a complete clinical and family history.
2
During the Test:A blood sample or cheek swab will be collected. For children and infants, the procedure is quick and causes minimal discomfort. The sample is sent to the laboratory for DNA extraction and NGS sequencing.
3
After the Test:Expect results within 3 to 4 weeks. A genetic counselor or physician will explain the report and its implications. If a variant is detected, additional family testing may be recommended.

About This Test

Who Should Get This Test

The primary purpose of this NGS genetic test is to identify pathogenic variants in the EPB41L1 gene in individuals presenting with intellectual disability or developmental delay. Confirmation of a genetic etiology assists clinicians in establishing a definitive diagnosis of MRD11, offering prognostic information, enabling appropriate supportive care, and informing family members about recurrence risks. Additionally, it helps in differentiating MRD11 from other overlapping neurodevelopmental disorders.

How to Prepare

  • Fasting is not required
  • Inform the laboratory about any recent blood transfusions
  • For FTA card, do not touch the marked area
  • For extracted DNA, ship in appropriate buffer on dry ice
  • Sample must be labeled correctly with patient name and unique ID

Doctor's Notes

Reviewed by — MBBS, MD (General Medicine) · Reg. No. 8052

"Genetic testing for MRD11 is vital for families with intellectual disability. Confirm the diagnosis to enable recurrence risk counselling and early intervention."

Last medically reviewed: September 7, 2026

Test Parameters & Specifications

Sample TypeBlood or Extracted DNA or One drop Blood on FTA Card
Sample VolumeBlood: 2-3 ml; FTA Card: 1 blood spot; Extracted DNA: 3-5 µg
ContainerEDTA vacutainer / FTA card / DNA vial
Collection MethodBlood draw / Buccal swab / FTA card spot

Sample Stability

Whole blood: 2-8°C for 48 hours
FTA card: Room temperature for up to 6 months
Extracted DNA: -20°C for up to 6 months
Sample Rejection Criteria:
  • Hemolyzed or clotted blood sample
  • Insufficient sample quantity
  • Sample not labelled or mislabeled
  • Sample received in broken or leaking container
  • FTA card contaminated or stained improperly

Understanding Your Results

The interpretation of EPB41L1 NGS results is based on the presence or absence of pathogenic or likely pathogenic variants in the EPB41L1 gene. Results are correlated with the clinical phenotype and family history.
📊

No pathogenic variant detected

No clinically significant mutation in EPB41L1 was identified. This does not rule out MRD11 due to other genes or non-genetic causes.

📊

Pathogenic variant detected

The test identified a disease-causing variant in EPB41L1, confirming a diagnosis of autosomal dominant mental retardation type 11.

📊

Likely pathogenic variant detected

A variant highly likely to cause MRD11 is present. Further family testing may be recommended.

📊

Variant of uncertain significance (VUS)

A variant was found, but its clinical significance is unclear. Additional testing of family members may help clarify.

⚠️ When to Consult a Doctor:

Consult a geneticist or neurologist if you or your child show signs of developmental delay, intellectual disability, speech delay, or have a family history of autosomal dominant intellectual disability. Genetic counseling is advised for all families undergoing or considering this test.

Limitations

  • NGS may not detect large genomic deletions, duplications, or dynamic mutations with high sensitivity
  • Potential inability to detect variants in non-coding regions or deep intronic areas
  • Variants of uncertain significance (VUS) may require further family studies
  • Test does not assess for methylation defects or uniparental disomy
  • Negative result does not exclude other genetic or non-genetic causes of intellectual disability

Risks & Considerations

  • No significant risks associated with blood draw
  • Mild pain or bruising at the puncture site in rare cases
  • Psychological impact of a positive genetic diagnosis

Interfering Factors

  • Contamination of sample with external DNA
  • Inadequate DNA quantity or quality
  • Rare intronic or regulatory variants not covered by NGS
  • Mosaicism may lead to false negative results
  • Consanguinity or complex genetic background

Frequently Asked Questions

What is EPB41L1 gene related intellectual disability?
EPB41L1 gene mutations cause autosomal dominant type 11 mental retardation (MRD11), a neurodevelopmental disorder characterized by intellectual disability, developmental delay, speech delay, and behavioral abnormalities.
Who should undergo this EPB41L1 NGS genetic test?
Children or adults with unexplained intellectual disability, global developmental delay, speech delay, or a family history of autosomal dominant intellectual disability should consider this test.
What is the cost of the EPB41L1 gene NGS test at DNA Labs India?
The cost is INR 20,000, which includes genetic counseling, NGS sequencing, bioinformatics analysis, and clinical interpretation.
What type of sample is required for the test?
You can provide blood in an EDTA tube, extracted DNA, or one drop of blood on an FTA card. All are acceptable for the test.
Do I need to fast before the test?
No, fasting is not required. You can eat and drink normally before providing your sample.
How long does the test take to produce results?
The turnaround time is 3 to 4 weeks from the date of sample receipt at the laboratory.
Can home sample collection be arranged?
Yes, DNA Labs India offers free home sample collection for this test across major cities in India when you book online.
Does this test detect all mutations in the EPB41L1 gene?
NGS detects single nucleotide variants, small insertions and deletions in coding regions and splice sites. It may not detect large deletions, duplications, or deep intronic variants.
Will this test give a definite diagnosis in all cases?
If a pathogenic variant is found, a definite diagnosis is possible. However, negative results do not exclude MRD11 as it could be due to other genes or non-genetic causes.
Is genetic counseling included in the test price?
Yes, genetic counseling is included. It is provided before and after the test to help in understanding the results and implications.
Can this test be done for prenatal diagnosis?
This test is designed for postnatal diagnosis using blood or FTA card. For prenatal testing, a separate procedure such as amniocentesis or CVS is needed; please consult with your genetic counselor.
How is the test result delivered?
Reports are delivered online via secure portal, email, or WhatsApp. You will also receive a telephonic or in-person interpretation session.
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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