Any mosaic variegated aneuploidy syndrome in which the cause of the disease is a mutation in the BUB1B gene. The disease is mosaic variegated aneuploidy syndrome 1 (MONDO_0009759, a Monarch Disease Ontology identifier). Also known as: BUB1B mosaic variegated aneuploidy syndrome, Mosaic variegated aneuploidy syndrome type 1, mosaic variegated aneuploidy syndrome caused by mutation in BUB1B, mosaic variegated aneuploidy syndrome type 1.