partial deletion of chromosome 7 partial deletion of the long arm of chromosome 7 7q deletion 7q monosomy Chromosome 7q deletion is a chromosome abnormality that occurs when there is a missing copy of the genetic material located on the long arm (q) of chromosome 7. The severity of the condition and the signs and symptoms depend on the size and location of the deletion and which genes are involved. Features that often occur in people with chromosome 7q deletion include developmental delay, intellectual disability, behavioral problems, and distinctive facial features. Most cases are not inherited, but people can pass the deletion on to their children. Treatment is based on the signs and symptoms present in each person. GARD:0003765 ICD10:Q93.5 MONDO:0016906 NCIT:C36408 Orphanet:262056 del(7q) deletion 7q loss of chromosome 7q monosomy 7q partial deletion of chromosome 7q partial deletion of the long arm of chromosome type 7 partial monosomy 7q partial monosomy of chromosome 7q partial monosomy of the long arm of chromosome 7