Test Directory

Clear All
Test Code
1798
Test Name
Fibrodysplasia Ossificans Progressiva
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
FOP
Description

Fibrodysplasia ossificans progressiva (FOP; MIM 135100) is a rare autosomal dominant disease characterized by progressive heterotopic ossification of soft connective tissues including skeletal muscle, tendons and ligaments. Individuals with FOP appear normal at birth, except for malformed great toes and thumbs. The ossification begins in early childhood and progresses over the course of a lifetime. It leads to a debilitating ankylosis of all major joints of the axial and appendicular skeleton and most patients will be confined to wheelchair by the third decade of life. Most FOP cases are sporadic, but there are reports of affected siblings.  FOP is caused by mutations in the ACVR1 gene that codes for activin A receptor, type I. It belongs to the protein kinase superfamily and functions as a receptor for bone morphogenetic proteins (BMPs). BMPs are extracellular signaling proteins that are critical for the early development of heart, central nervous system, cartilage, and bone. All of the ACVR1 mutations causing FOP are predicted to activate the protein and result in enhanced BMP signaling.
Testing Schedule
Monday-Friday
Genes
ACVR1
MIM
135100
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.
© 2026 HNL Lab Medicine. All rights reserved.