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ACTB Gene Dystonia juvenile-onset NGS Genetic Test

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ACTB Gene Dystonia juvenile-onset NGS Genetic Test

Short Name: ACTB Dystonia NGS Test

Also known as: ACTB Gene Dystonia NGS Test, Juvenile-Onset Dystonia Genetic Test, ACTB Gene Sequencing Test

ACTB Gene Dystonia juvenile-onset NGS Genetic Test test available at DNA Labs India for ₹20,000. Uses Next-Generation Sequencing (NGS), Sanger Sequencing on Blood samples. Results in The test report is generally ready within 2 to 4 weeks after the sample reaches the laboratory. Time may vary depending on sequencing quality and the need for additional confirmation tests.. Free home collection in 300+ cities across India.

NGS Genetic TestPediatric and Adolescent🏠 Home Collection

✍️ Written By

🩺 Medically Reviewed By

Dr SULOCHANA HEMCHANDRA HOLLA

Dr SULOCHANA HEMCHANDRA HOLLA

Consultant Medical Geneticist · Reg: 8532

Last reviewed: September 7, 2026

Overview

The purpose of this NGS genetic test is to identify pathogenic variants in the ACTB gene that are associated with juvenile-onset dystonia. This supports clinical diagnosis, provides prognostic information, aids in family genetic counseling, and may guide targeted therapeutic strategies.

Test Code
4018
Price
₹20,000
Sample Type
Blood
Result Time
The test report is generally ready within 2 to 4 weeks after the sample reaches the laboratory. Time may vary depending on sequencing quality and the need for additional confirmation tests.
Fasting Required
No
Method
Next-Generation Sequencing (NGS), Sanger Sequencing
Step 1

Sample Collection

No fasting is required. A genetic counseling session is conducted to obtain a detailed medical history, explain the testing process, and draw a three-generation pedigree chart to document family members affected with dystonia or related neurological disorders.

Method: Peripheral Venipuncture

Step 2

Laboratory Analysis

A small blood sample is drawn from a vein in the arm by a trained phlebotomist. The procedure is quick and minimally invasive. The sample is labeled and transported to the laboratory under controlled temperature conditions.

Step 3

Report Delivery

You may resume normal activities immediately. The sample is processed in the laboratory using NGS technology. Reports will be shared via the preferred communication method within the stated turnaround time. If clinically significant variants are found, a genetic counselor or physician will explain the results and implications.

Timeline: The test report is generally ready within 2 to 4 weeks after the sample reaches the laboratory. Time may vary depending on sequencing quality and the need for additional confirmation tests.

Patient Instructions

1
Before the Test:A detailed pre-test genetic counseling session is mandatory to understand the purpose, benefits, limitations, and potential outcomes of the genetic test. The counselor will draw a pedigree chart and discuss the hereditary pattern.
2
During the Test:You will provide a blood sample at your preferred location or at a DNA Labs India center. The sample is processed under strict quality controls using advanced NGS technology. No special precautions are required during the test.
3
After the Test:After testing, results are reviewed by clinical geneticists and pathologists. You will receive an interpretation session to explain the findings and their implications for treatment and family planning.

About This Test

Who Should Get This Test

The purpose of this NGS genetic test is to identify pathogenic variants in the ACTB gene that are associated with juvenile-onset dystonia. This supports clinical diagnosis, provides prognostic information, aids in family genetic counseling, and may guide targeted therapeutic strategies.

How to Prepare

  • No fasting required
  • Prepare a list of current medications and supplements
  • Bring any previous neuroimaging or neurological reports if available
  • Ensure the sample is collected using an EDTA vacutainer
  • Inform the phlebotomist if you have a bleeding disorder or are on anticoagulants

Doctor's Notes

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

"Genetic testing for juvenile-onset dystonia is crucial for accurate diagnosis, guiding management, and enabling family counseling. Early diagnosis can significantly improve outcomes through timely therapeutic interventions."

Last medically reviewed: September 7, 2026

Test Parameters & Specifications

Sample TypeBlood
Sample Volume2-3 mL
ContainerEDTA Vacutainer
Collection MethodPeripheral Venipuncture

Sample Stability

Whole blood: 24 hours at room temperature (15-25°C)
Whole blood: 7 days at 2-8°C
Extracted DNA: 1 year at -20°C
Sample Rejection Criteria:
  • Clotted or hemolyzed sample
  • Inadequate sample volume (<1 mL)
  • Sample received in a non-EDTA container
  • Sample with incorrect patient identification
  • Sample exposed to extreme temperatures

Understanding Your Results

All identified variants in the ACTB gene are classified according to the ACMG/AMP guidelines. The report provides a clear interpretation of pathogenicity, clinical significance, and recommendations for medical management and family testing.
📊

Pathogenic / Likely Pathogenic

Confirms the diagnosis of ACTB-related juvenile-onset dystonia. Families should receive genetic counseling and testing for at-risk members.

📊

Variant of Unknown Significance (VUS)

Insufficient evidence to classify the variant as benign or pathogenic. It may or may not contribute to the condition.

📊

Benign / Likely Benign

Variant is not considered causative for the disorder.

⚠️ When to Consult a Doctor:

If you have received a positive or inconclusive result, or if symptoms suggestive of juvenile-onset dystonia are present, consult your referring physician or a neurologist to discuss treatment options, symptom management, and surveillance strategies. Genetic counseling is strongly recommended for all individuals undergoing this test.

Limitations

  • ⚠This test detects variants only in the ACTB gene; mutations in other genes (e.g., TOR1A, THAP1) can cause similar phenotypes.
  • ⚠Large genomic deletions, duplications, or complex rearrangements may not be reliably detected by NGS
  • ⚠Variants of unknown significance (VUS) may require additional family studies or functional analysis
  • ⚠Regulatory regions, deep intronic variants, and epigenetic changes are not covered
  • ⚠The test does not assess somatic mutations or mitochondrial mutations

Risks & Considerations

  • ●No significant physical risks beyond standard blood draw (e.g., bruising, dizziness)
  • ●Potential psychological impact of genetic results
  • ●Risk of discovering uncertain findings (VUS)
  • ●Possible incidental findings unrelated to the indication
  • ●Implications for family members and reproductive decisions

Interfering Factors

  • ●Severe hemolysis or clotting of the blood sample
  • ●Insufficient DNA quantity due to inadequate sample volume
  • ●Contamination of sample during collection or processing
  • ●Recent bone marrow transplantation (may alter germline DNA analysis)

Compare With Similar Tests

TestACTB Gene Dystonia juvenile-onset NGS Genetic TestTOR1A (DYT1) Dystonia NGS TestTHAP1 (DYT6) Dystonia NGS TestComprehensive Dystonia Gene Panel (Multiple Genes)
ComparisonACTB Gene Dystonia juvenile-onset NGS Genetic Test

Frequently Asked Questions

What is juvenile-onset dystonia?
Juvenile-onset dystonia is a neurological movement disorder characterized by involuntary muscle contractions, twisting, repetitive movements, or abnormal postures that begin before age 18. It often has a genetic cause, including mutations in the ACTB gene.
What is the ACTB gene?
The ACTB gene provides instructions for making beta-actin, a protein important for cell structure and muscle function. Mutations in this gene can disrupt normal muscle control and lead to dystonia.
What does the ACTB gene NGS genetic test detect?
The test uses NGS to analyze all coding regions and splice sites of the ACTB gene. It detects single nucleotide variants, small insertions/deletions, and splice-site mutations that are associated with juvenile-onset dystonia.
Why is this test important?
A confirmed genetic diagnosis helps guide treatment, provides information about disease progression, enables family counseling, and may allow for early intervention to improve quality of life.
What are the symptoms of juvenile-onset dystonia?
Symptoms may include uncontrollable muscle spasms, twisting or repetitive movements, abnormal postures, tremors, difficulty with fine motor skills, speech difficulties, swallowing problems, and vision disturbances.
Who should consider this genetic test?
Children or adolescents with unexplained dystonia symptoms, individuals with a family history of juvenile-onset dystonia, and those with a clinical suspicion of an ACTB-related disorder should consider this test.
Is fasting required before the test?
No, fasting is not required for this genetic test. You can eat and drink normally before sample collection.
What kind of sample is needed?
A small blood sample (2-3 mL) is collected in an EDTA tube. Alternative sample types like buccal swabs may be available on request.
How long does it take to get results?
The turnaround time is typically 2 to 4 weeks. This allows for complete sequencing, bioinformatic analysis, and confirmation of any clinically significant variants.
What are the limitations of this NGS test?
This test targets only the ACTB gene. Large deletions/duplications may not be detected. Some variants of unknown significance may require further family studies. A negative result does not fully rule out a genetic cause.
What happens if a mutation is found?
If a pathogenic or likely pathogenic variant is identified, your doctor will discuss management options. Genetic counseling is recommended to understand inheritance risks for other family members.
Can this test be used for prenatal or preimplantation genetic diagnosis?
No, this test is intended for diagnostic confirmation in symptomatic individuals. For prenatal or preimplantation testing, a specialized genetic consultation and different laboratory procedures are required.
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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