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Test Code
1965
Test Name
Klippel-Feil Syndrome NGS Panel
CPT Codes
81479
Expected Turnaround Time
Typically 2 to 4 weeks from receipt of a sample in the laboratory. All cases involving ongoing pregnancies will be expedited.
Clinical Utility
Genetic analysis to provide a molecular diagnosis of this disorder. Recommended for individuals with a personal and/or family history of this disorder to ensure appropriate treatment and establish recurrence risk for family members.
Specimen and Container Info

Non-Prenatal Specimens

Preferred/Alternate

Specimen Type

Containers

Volume

Preferred Specimen Type

Whole Blood

Lavender Top (EDTA)

3 mL

Alternate Specimen Type

Genomic DNA

1.5 mL Tube

3 µg (at a concentration of at least 30 ng/µl), preferably in TE solution.

Alternate Specimen Type

Fibroblasts

T-25 Flasks

2 confluent T-25 flasks, filled to capacity

Alternate Specimen Type

Saliva (Whole blood is recommended for CNV)

DNA Self-Collection Kit or Oragene Saliva Collection Kit for Young Children

Follow kit instructions (www.dnagenotek.com)

Prenatal Specimens

Either specimen type below is acceptable.

Specimen Type

Containers

Volume

Cultured cells

T-25 Flasks

2 confluent T-25 flasks derived from amnio or CVS samples.

Genomic DNA

1.5 mL Tube

3 µg (at a concentration of at least 30 ng/µl), preferably in TE solution.

NOTE: For specimens from outside of North America, the preferred specimen type is Genomic DNA. HNL Genomics does not recommend shipping whole blood or cultured cells from any location other than the United States, Canada, or Mexico.
Transport Instructions
  • Transport at room temperature within 24 hours.
  • If the specimen cannot be transported to the lab within 24 hours, refrigerate for up to 72 hours.
  • Do not freeze or expose to extreme temperatures, refrigerate for up to 72 hours if cannot be transported to lab within 24 hours. 
Stability Requirements

Room Temperature

24 hours

Refrigerated

72 hours
Causes for Rejection
  • Improperly labeled specimen (minimum of two patient identifiers)
  • Inappropriate specimen type
  • Incomplete or incorrect test request form
  • Insufficient volume
  • Specimen has leaked in transit
  • Specimen without a test order
Methodology
Next Generation Sequencing and Copy Number Variation Analysis
Performing Location
Genomics - Snowdrift
Alternate Names
KFS
Description

Klippel-Feil syndrome (KFS) is a genetically heterogeneous disorder characterized by variable degrees of bony fusion in the cervical vertebra. KFS patients may have spinal instability, disc degeneration, scoliosis, malformation of laryngeal cartilage with vocal impairment, cleft palate, facial dysmorphism, and limb and hand abnormalities. Sprengel anomaly and sensorineural, conductive or mixed hearing impairment are common. The clinical triad of short neck, low posterior hairline and limited neck movement is observed in less than 50% of KFS patients.

The Klippel-Feil syndrome NGS panel consists of five genes: GDF3, GDF6, MEOX1, MYO18B and RIPPLY2.

Gene

Disorder

MIM

Inheritance

GDF3

Klippel-Feil syndrome 3, autosomal dominant

613702

AD

GDF6

Klippel-Feil syndrome 1, autosomal dominant

118100

AD

MEOX1

Klippel-Feil syndrome 2, autosomal recessive

214300

AR

MYO18B

Klippel-Feil syndrome 4, autosomal recessive,

    with myopathy and facial dysmorphism

616549

AR

RIPPLY2

Klippel-Feil syndrome, RIPPLY2 related

Spondylocostal dysostosis 6, autosomal recessive

616566

AR
Testing Schedule
Monday-Friday
Genes
GDF3, GDF6, MEOX1, MYO18B, RIPPLY2
MIM
118100, 214300, 613702
Disease Group
Skeletal Disorders
The American Medical Association (AMA) Current Procedural Terminology (CPT) codes published by HNL Lab Medicine are guidelines and are intended for informational purposes only. CPT coding is the exclusive responsibility of the billing entity. View the Terms.
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