Males with an extra Y chromosome, often mild.
- Specialty
- Genetics
- Subspecialty
- Genetics / Chromosomal disorders
- Sex & age distribution
- Male: affected; Female: not affected; Children: yes
- Gene(s) involved
- None recorded
- Alternative names & eponyms
- 47,XYY; Jacobs syndrome
Etiology & mechanism
Extra Y chromosome.
Gene(s) involved (0)
No gene recorded for this syndrome.
Symptoms & signs (5)
In plain terms, someone with XYY syndrome may experience the following — click any to explore related syndromes:
Same gene(s)
Other syndromes that involve one of this syndrome's genes.
Overlapping symptoms
Other syndromes that share symptoms with this one.
Drag nodes, scroll to zoom, click a node to open that syndrome.
Shares symptoms with
3 shared
Triple X syndrome
learning difficulties, speech delay, tall stature
2 shared
Klinefelter syndrome
learning difficulties, tall stature
2 shared
Lujan–Fryns syndrome
behavioral problems, macrocephaly
2 shared
Sotos syndrome
macrocephaly, tall stature
2 shared
Weaver syndrome
macrocephaly, tall stature
1 shared
Bannayan–Riley–Ruvalcaba syndrome
macrocephaly
1 shared
Bannayan–Riley–Ruvalcaba syndrome with neurological involvement
macrocephaly
1 shared
Cowden syndrome
macrocephaly
1 shared
DICER1 syndrome
macrocephaly
1 shared
Gorlin syndrome
macrocephaly
Shares genes with
None.
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