Issues in genetic testing for ultra-rare diseases: background and introduction

Area of Science:

• Medical Genetics
• Molecular Diagnostics
• Public Health Policy

Background:

• Multiple national committees since 1994 have highlighted challenges in accessing quality genetic testing for ultra-rare diseases.
• Despite recommendations, significant progress in improving access to rare disease genetic testing remained limited for many years.

Purpose of the Study:

• To review the historical context and current landscape of genetic testing for ultra-rare genetic diseases in the U.S.
• To highlight key initiatives and outcomes aimed at enhancing the availability and quality of molecular genetic testing for rare conditions.

Main Methods:

• Review of historical national advisory committee reports and recommendations.
• Description of national workshops focused on rare disease laboratory testing quality.
• Identification of key outcomes such as the National Laboratory Network for Rare Disease Testing and the Collaboration and Education in Test Translation program.

Main Results:

• Previous advisory committee recommendations yielded limited systematic progress.
• National workshops involving diverse stakeholders fostered community-driven solutions.
• Successful initiatives include a national network and a program supporting test translation from research to clinical diagnostics.

Conclusions:

• Sustained efforts and collaborative initiatives are crucial for advancing genetic testing access for rare diseases.
• The formation of specialized networks and translation programs represents significant progress in addressing long-standing challenges.
• Continued focus on quality and accessibility is essential for improving patient outcomes in rare genetic disorders.