syndrome caused by partial chromosomal deletion chromosome 17q11.2 deletion syndrome, 1.4Mb 17q11 microdeletion syndrome 17q11 microdeletion syndrome is a rare severe form of neurofibromatosis type 1 (NF1) characterized by mild facial dysmorphism, developmental delay, intellectual disability, increased risk of malignancies, and a large number of neurofibromas. DOID:0060403 Del(17)(q11) GARD:0005408 ICD10:Q85.0 MESH:C563524 MONDO:0013357 NF1 microdeletion syndrome NF1 microduplication syndrome OMIM:613675 Orphanet:97685 Van Asperen syndrome chromosome 17q11.2 deletion syndrome chromosome 17q11.2 deletion syndrome, 1.4-MB monosomy 17q11 neurofibromatosis 1 microdeletion syndrome neurofibromatosis type 1 microdeletion syndrome chromosomal anomaly with epilepsy as a major feature partial deletion of the long arm of chromosome 17 neurofibromatosis type 1