All 66 SNP-array raw data and the raw data of selected abnormal CNV-seq cases

This study employed the CytoScan 750K Suite (Thermo Fisher Scientific, Waltham, MA, USA) CMA platform for comprehensive analysis. Chromosome analysis, detection of CNVs, and identification of regions of allelic homozygosity (ROHs) were performed using ChAS 4.3 software (Thermo Fisher Scientific).This study utilized the MGISEQ-2000 platform (BGI, Shenzhen, China) for CNV-seq analysis. Library preparation, DNA nanoball generation, and sequencing were performed following standard cPAS procedures. Raw data were processed through alignment, deduplication, and GC correction, and CNVs were identified using established statistical algorithms.