The Mosaic Down Syndrome Association is designed to assist any family or individual whose life has been affected by mosaic Down syndrome.

The leading human rights organization for all individuals with Down syndrome.

Provides information, advocacy and support concerning all aspects of life for individuals with Down syndrome.

World Down Syndrome Day (WDSD) , 21 March, is a global awareness day which has been officially observed by the United Nations since 2012. The date for WDSD being the 21st day of the 3rd month, was selected to signify the uniqueness of the triplication (trisomy) of the 21st chromosome which causes Down syndrome.