Skip to main content
DNA Labs India

TFG Gene Hereditary motor and sensory neuropathy, Okinawa type NGS Genetic Test

DNA Labs India | ISO 9001:2015 Certified

TFG Gene Hereditary motor and sensory neuropathy, Okinawa type NGS Genetic Test

Short Name: TFG Gene HMSN Okinawa NGS

Also known as: TFG Neuropathy, HMSN Okinawa type, Hereditary Motor and Sensory Neuropathy with TFG mutation

TFG Gene Hereditary motor and sensory neuropathy, Okinawa type NGS Genetic Test test available at DNA Labs India for ₹20,000. Uses Next-Generation Sequencing (NGS) on Whole blood, Extracted DNA, or one drop blood on FTA Card samples. Results in Reports are released 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

To detect pathogenic variants in the TFG gene associated with Hereditary Motor and Sensory Neuropathy, Okinawa type, thereby confirming the clinical diagnosis and enabling appropriate genetic counseling.

Test Code
4127
ICD Code
G60.0
Price
₹20,000
Sample Type
Whole blood, Extracted DNA, or one drop blood on FTA Card
Result Time
Reports are released within 3 to 4 weeks from the date of sample receipt at the laboratory.
Fasting Required
No
Method
Next-Generation Sequencing (NGS)
Step 1

Sample Collection

No fasting is required. Please provide your clinical history, nerve conduction study/EMG reports, and family pedigree if available.

Method: Peripheral blood draw or FTA card spot

Step 2

Laboratory Analysis

Sample is collected by a trained phlebotomist using sterile techniques. For FTA card, a single drop of blood is applied to the card.

Step 3

Report Delivery

For FTA card, allow the card to air-dry before placing it in the protective envelope. For blood samples, ensure the tube is labeled and kept at room temperature.

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

Patient Instructions

1
Before the Test:A genetic counseling session will be scheduled to discuss the purpose of the test, its limitations, and the implications of results for the patient and family members.
2
During the Test:The test involves a simple sample collection (blood or FTA card). No special preparation is required, and the procedure is quick.
3
After the Test:The clinical report and raw data files will be delivered securely. A genetic counselor will discuss the findings and recommend appropriate follow-up.

About This Test

Who Should Get This Test

To detect pathogenic variants in the TFG gene associated with Hereditary Motor and Sensory Neuropathy, Okinawa type, thereby confirming the clinical diagnosis and enabling appropriate genetic counseling.

How to Prepare

  • Whole blood in EDTA (purple top) tube - 2 ml preferred
  • Extracted DNA - 5 μg in sterile screw-cap tube
  • FTA card - one blood spot applied to FTA card, dried naturally

Doctor's Notes

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

"Clinical correlation with physical examination and electrophysiological studies is essential when interpreting genetic results for hereditary neuropathies."

Last medically reviewed: September 7, 2026

Test Parameters & Specifications

Sample TypeWhole blood, Extracted DNA, or one drop blood on FTA Card
Sample Volume2 ml whole blood, 5 μg DNA, or 1 blood spot on FTA card
ContainerEDTA tube or FTA card
Collection MethodPeripheral blood draw or FTA card spot

Sample Stability

Whole blood (EDTA)48 hours
Whole blood (EDTA)7 days
Extracted DNALong-term (months to years)
FTA card blood spot12 months
Sample Rejection Criteria:
  • Hemolyzed or clotted blood sample
  • Insufficient quantity of blood or DNA
  • Improperly labeled or misidentified sample
  • FTA card without visible dried blood spot

Understanding Your Results

Results should be interpreted in the context of clinical symptoms, nerve conduction studies, family history, and other laboratory findings. A genetic counselor will help explain the result.
📊

Pathogenic variant detected

Confirms the diagnosis of TFG gene-related Hereditary Motor and Sensory Neuropathy, Okinawa type.

📊

Variant of uncertain significance (VUS) identified

Clinical significance is currently unclear; additional family studies and segregation analysis may be recommended.

📊

No pathogenic variant detected

Does not confirm the diagnosis; other genetic or acquired causes of HMSN should be considered.

⚠️ When to Consult a Doctor:

If you or a family member has progressive muscle weakness, sensory loss, or a known family history of HMSN, consult a neurologist or clinical geneticist for evaluation and genetic testing.

Limitations

  • NGS may not detect large deletions/duplications, deep intronic variants, or trinucleotide repeat expansions in the TFG gene
  • Variant of uncertain significance may require additional family studies for reclassification
  • This test is diagnostic for TFG gene-associated HMSN only; negative results do not exclude other genetic causes of HMSN

Risks & Considerations

  • Minimal risk of bruising or bleeding at the blood draw site
  • Minor discomfort during sample collection
  • FTA card collection is virtually painless

Interfering Factors

  • Recent allogeneic bone marrow transplant may cause blood chimerism affecting DNA analysis
  • Contamination or degradation of extracted DNA
  • Low-quality FTA card sample with insufficient blood

Frequently Asked Questions

What is TFG gene HMSN Okinawa type?
TFG gene HMSN Okinawa type is a rare inherited peripheral neuropathy caused by mutations in the TFG gene. It was first identified in families from Okinawa, Japan, and leads to progressive muscle weakness, wasting, and sensory loss.
Who should consider this NGS genetic test?
Individuals with clinical signs of hereditary motor and sensory neuropathy, atypical neuropathies, a family history of TFG mutations, or those with unexplained progressive peripheral neuropathy should consider this test.
What samples are accepted for this test?
We accept whole blood in EDTA, extracted DNA, or one drop of blood on an FTA card.
Is fasting required for this test?
No, fasting is not required for this genetic test. You can eat and drink normally before sample collection.
What is the turnaround time for results?
Reports are typically issued within 3 to 4 weeks from the date of sample receipt at the laboratory.
What is the cost of the TFG gene HMSN NGS test in India?
The test cost at DNA Labs India is INR 20,000, which includes free home sample collection (in eligible cities), genetic counseling, and raw data files.
Can this test detect all types of HMSN?
No, this test specifically analyzes the TFG gene for Okinawa-type HMSN. Other genes associated with other forms of HMSN are not evaluated in this targeted test; broader neuropathy panels or whole exome sequencing may be needed.
How is the test performed?
The test uses Next-Generation Sequencing (NGS) technology to analyze all coding exons and intron-exon boundaries of the TFG gene for pathogenic variants.
Will this test give a definitive diagnosis?
If a known pathogenic variant is detected and symptoms match, it confirms the diagnosis. If no variant is found, it does not rule out hereditary neuropathy due to other genes.
Do you provide genetic counseling with the test?
Yes, a professional genetic counseling session is included to review your family history, discuss the test purpose, and interpret the results.
Why should I ask for raw data, FASTQ, and VCF files?
Raw data files allow independent verification, secondary bioinformatic analysis, and future re-interpretation as medical knowledge evolves. DNA Labs India is transparent and provides these files with the clinical report.
Is home sample collection available for this test?
Yes, we offer free home sample collection for online bookings across multiple cities in India, including Mumbai, Delhi, Bangalore, Hyderabad, and many more.
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.

Related Tests

For Hospitals & Clinics

Reference Laboratory Services

We serve as a reference laboratory for hospitals and clinics across India. Send samples from your facility with same-day pickup, priority processing, and results delivered through our online portal. Competitive institutional pricing available.

LIMS Integration

Your Data Privacy

Your medical data is protected under Indian law.

Stored in India: All patient records are stored on servers located in India. No data is transferred outside the country.

DPDP Act Compliant: Under the Digital Personal Data Protection Act 2023, you can request deletion of your records at any time by contacting support.

Book Your Test

Enter your details and we'll connect you within 15 minutes.

🧬

Quick Connect

Enter your mobile number and we’ll connect you with the team.

+91

✅ Connecting you now...

🔒 Your number is used to respond to this request.