Chromosome 7q duplication
Alternate names[edit | edit source]
Duplication 7q; Trisomy 7q; 7q duplication; 7q trisomy; Partial trisomy 7q
Definition[edit | edit source]
Chromosome 7q duplication is a chromosome abnormality that occurs when there is an extra copy of genetic material on the long arm (q) of chromosome 7.
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Cause[edit | edit source]
This condition occurs when there is an extra copy of genetic material on the long arm (q) of chromosome 7.
Inheritance[edit | edit source]
Most cases are not inherited, but people can pass the duplication on to their children.
Signs and symptoms[edit | edit source]
- The severity of the condition and the signs and symptoms depend on the size and location of the duplication and which genes are involved.
- Features that often occur in people with chromosome 7q duplication include developmental delay, intellectual disability, behavioral problems and distinctive facial features.
Diagnosis[edit | edit source]
Chromosome disorders may be suspected in people who have developmental delays, intellectual disabilities and/or physical abnormalities.
Several types of genetic tests can identify chromosome disorders:
- Karyotyping
- Microarray (also called array CGH)
- Fluorescence in situ hybridization (FISH)
Treatment[edit | edit source]
Treatment is based on the signs and symptoms present in each person.
NIH genetic and rare disease info[edit source]
Chromosome 7q duplication is a rare disease.
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