ARG1 Comprehensive - Sequence & Deletion/Duplication Analysis

Casandra

Casandra Test Code BA77198Version 1 (DRAFT)

Performing Lab

Lab Baylor GeneticsLab Test ID 3429CPT Code 81479

ARG1 Comprehensive - Sequence & Deletion/Duplication Analysis

Clinical Use

Use

The ARG1 Comprehensive - Sequence & Deletion/Duplication Analysis is designed to identify pathogenic variants related to Arginase Deficiency, a serious urea cycle disorder caused by a deficiency of the enzyme arginase. This disorder can result in severe hyperammonemia, leading to various health complications. Symptoms typically manifest between ages one to three, with affected individuals experiencing developmental delays, spasticity, and potential loss of milestones. Without intervention, symptoms can escalate, including severe intellectual disability and seizures. This analysis is critical for diagnosing individuals showing symptoms or with a family history of the disorder and is also advised for those in carrier screening situations.

Special Instructions

This genetic analysis requires careful specimen collection and is shipped at controlled temperatures to maintain integrity. Clinicians should prepare to coordinate with the lab for proper handling and shipping methods. It is recommended that samples arrive within specified timeframes (72 hours), and guidance is available for various specimen types. It is essential for patients to discuss testing options thoroughly with their healthcare provider.

Limitations

Results may not identify all pathogenic variants due to limitations of the current sequencing technologies. The specificity and sensitivity of the analysis may vary, and undetected variants can impact the diagnostic accuracy. It is essential to interpret results within the full clinical context and consult with a genetics professional. Additionally, the test only identifies specific variations associated with Arginase Deficiency, and other untested genes or mutations may still play a role in clinical presentation.

Test Details