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DDB2 Gene Xeroderma pigmentosum, group E, DDB-negative subtype NGS Genetic Test

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DDB2 Gene Xeroderma pigmentosum, group E, DDB-negative subtype NGS Genetic Test

Short Name: DDB2 Gene XP Group E NGS Test

Also known as: XP Group E Genetic Test, DDB2 Gene Mutation Test, Xeroderma Pigmentosum Type E NGS Test

DDB2 Gene Xeroderma pigmentosum, group E, DDB-negative subtype 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 3 to 4 Weeks. Free home collection in 300+ cities across India.

NGS Genetic Test🏠 Home Collection

🩺 Medically Reviewed By

Overview

The purpose of the DDB2 Gene Xeroderma Pigmentosum, Group E NGS Genetic Test is to identify mutations in the DDB2 gene for definitive diagnosis of this XP subtype, enabling early intervention, genetic counselling, and personalized management to prevent complications such as skin cancer and neurological decline.

Test Code
5177
Price
₹20,000
Sample Type
Blood or Extracted DNA or One drop Blood on FTA Card
Result Time
3 to 4 Weeks
Fasting Required
No
Method
Next-Generation Sequencing (NGS)
Step 1

Sample Collection

Provide detailed clinical history and undergo a genetic counselling session to draw a pedigree chart of affected family members.

Method: Venipuncture or finger-prick

Step 2

Laboratory Analysis

A blood sample is collected via venipuncture or a finger-prick for FTA card, following standard aseptic techniques.

Step 3

Report Delivery

Apply pressure to the puncture site to prevent bruising. Store samples at ambient room temperature as per instructions.

Timeline: 3 to 4 Weeks

Patient Instructions

1
Before the Test:Schedule a genetic counselling session, provide medical history, and avoid any recent blood transfusions if possible.
2
During the Test:A small blood sample is drawn; the procedure is quick and minimally invasive, typically taking 10-15 minutes.
3
After the Test:Resume normal activities immediately. Results will be available in 3-4 weeks via online portal, email, or WhatsApp.

About This Test

Who Should Get This Test

The purpose of the DDB2 Gene Xeroderma Pigmentosum, Group E NGS Genetic Test is to identify mutations in the DDB2 gene for definitive diagnosis of this XP subtype, enabling early intervention, genetic counselling, and personalized management to prevent complications such as skin cancer and neurological decline.

How to Prepare

  • Ensure patient is relaxed and hydrated
  • Use sterile equipment for blood collection
  • Label samples correctly with patient details
  • Transport samples to the lab within 24 hours

Doctor's Notes

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

"Early genetic diagnosis of Xeroderma Pigmentosum Group E is vital for implementing sun protection strategies and monitoring for skin cancers, significantly improving patient quality of life."

Last medically reviewed: September 7, 2026

Test Parameters & Specifications

Sample TypeBlood or Extracted DNA or One drop Blood on FTA Card
Sample VolumeAs required for NGS analysis
ContainerEDTA tube or FTA card
Collection MethodVenipuncture or finger-prick

Sample Stability

Ambient Room Temperature24 hours for blood; stable for FTA card as per guidelines
Sample Rejection Criteria:
  • Hemolyzed or clotted samples
  • Insufficient sample volume
  • Incorrect labeling or missing patient information

Understanding Your Results

Results indicate the presence or absence of mutations in the DDB2 gene. A positive result confirms XP Group E, while a negative result may require further testing if clinical suspicion remains.
📊

Pathogenic variant detected

Confirms diagnosis of DDB2 Gene Xeroderma Pigmentosum, Group E. Genetic counselling and management recommended.

📊

No pathogenic variant detected

XP Group E unlikely, but consider other genetic tests if symptoms persist.

📊

Variant of uncertain significance

Further family studies or functional assays may be needed for clarification.

⚠️ When to Consult a Doctor:

Consult a dermatologist or geneticist if you experience symptoms of XP, have a family history of the disorder, or receive a positive test result for appropriate management and counselling.

Limitations

  • May not detect all possible mutations in the DDB2 gene
  • Genetic variants of uncertain significance may be identified
  • Results require interpretation by a genetic counsellor or specialist
  • Does not rule out other forms of XP or genetic disorders

Risks & Considerations

  • Minor pain or bruising at the blood draw site
  • Very low risk of infection or fainting
  • No significant long-term risks associated with the test

Interfering Factors

  • Hemolyzed or degraded DNA samples may affect test accuracy
  • Recent blood transfusions could interfere with genetic analysis
  • Contamination during sample collection or processing

Compare With Similar Tests

TestDDB2 Gene Xeroderma pigmentosum, group E, DDB-negative subtype NGS Genetic TestXPA Gene TestXPC Gene TestComprehensive XP Panel
ComparisonDDB2 Gene Xeroderma pigmentosum, group E, DDB-negative subtype NGS Genetic Test

Frequently Asked Questions

What is DDB2 Gene Xeroderma Pigmentosum, Group E?
It is a rare genetic subtype of Xeroderma pigmentosum caused by mutations in the DDB2 gene, leading to extreme sun sensitivity and increased skin cancer risk.
How is this condition inherited?
It is inherited in an autosomal recessive pattern, meaning both parents must carry a mutated DDB2 gene for a child to be affected.
What are the common symptoms?
Symptoms include freckling, pigmentation changes, dry skin, eye problems like photophobia, and neurological issues such as developmental delay.
How is the diagnosis confirmed?
Diagnosis is confirmed through genetic testing, specifically the NGS Genetic Test that analyzes the DDB2 gene for mutations.
What is the cost of the DDB2 Gene NGS Test?
The test costs INR 20000 at DNA Labs India, with home sample collection available across India.
Is home collection available for this test?
Yes, DNA Labs India offers free home sample collection for online bookings in numerous cities across India.
How long does it take to get the results?
Results are typically available within 3 to 4 weeks after sample collection.
What should I do before the test?
Before the test, provide clinical history and undergo a genetic counselling session to draw a family pedigree chart.
Are there any risks associated with the test?
The test involves minimal risks, such as minor pain or bruising from blood draw, with no significant long-term effects.
Can Xeroderma Pigmentosum be cured?
There is no cure for XP, but early diagnosis and management, including sun protection and regular monitoring, can prevent complications.
How can I prevent complications from XP?
Prevent complications by avoiding UV exposure, using protective clothing and sunscreen, and undergoing regular dermatological and neurological check-ups.
Where can I get this genetic test done?
You can book the test through DNA Labs India's website, with home collection available in cities like Mumbai, Delhi, Bangalore, and many others.
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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