{"GSE207744": {"is_usable": true, "is_gene_available": true, "is_trait_available": true, "is_available": true, "is_biased": false, "has_age": false, "has_gender": false, "sample_size": 72, "note": "Dataset contains gene expression data from rectal cancer patients examining chemoradiotherapy response."}, "TCGA": {"is_usable": false, "is_gene_available": true, "is_trait_available": true, "is_available": true, "is_biased": true, "has_age": true, "has_gender": true, "sample_size": 474, "note": "Sample size after preprocessing: 474. Number of genes: 19848"}}