Update: The download section has been updated with a summary of the ABC system ("ABC Variant Classification System in brief") and a presentation including recent modifications after a survey among ESHG members ("ABC Variant System Presentation").
Update: The article about the ABC system for variant classification has been accessed more than 10 000 times since E-pub date in EJHG, and after user feedback the standardized variant comments (step C) has been updated, see link link below to an improved and updated system presentation below (pptx-file).
An ad hoc working group in ESHG proposed a two-dimensional system for variant classification two years ago, and this work has now progressend and resulted in the so-called ABC system: A stepwise approach to variant classification that can be used independently or as an add-on to the ACMG system. See Figure 2 for schematics.
A link to the Open Access article describing the system: https://rdcu.be/ckvP5
Attached you will find the manuscript .pdf and a .pptx file of all the figures and tables (in colours).
Hopefully this new system will make variant classification easier, more informative and of better consistency and clinical usefulness. We welcome feedback and suggestions for improvements!
Gunnar D Houge