DNA Analysis BeadChip HumanCNV370-Duo is a microarray that targets novel regions of the genome that show copy number variation (CNV). Copy number variations can occur when a region within a chromosome or an entire chromosome is randomly amplified or deleted. DNA copy number of certain genomic regions can vary widely from person to person and has been linked to cancers, congenital disorders, and other common diseases. The new chip allows an increase in the number of samples that researchers analyze while maintaining data quality. Two samples can be analyzed simultaneously and access is offered to novel content for detecting disease-relevant CNV regions. Content found on this chip will also be available on Human 1M, a single-chip solution that will profile over one million diverse genetic variants.