raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:199310

Tetragametic chimerism syndrome

Synonyms: 46,XX/46,XY chimerism

Type
Malformation syndrome
Group
Disorder
Inheritance
Not applicable, Unknown
Age of onset
Infancy, Neonatal
Status
active

A rare, sex chromosome disorder of sex development characterized by the two different haploid sets of maternal and paternal chromosomes and variable phenotype - from normal male or female genitalia, to different degrees of ambiguous genitalia, and often infertility. Also, in the cases of monochorionic dizygotic twins, it can be confined to blood of both twins.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enTetragametic chimerism syndrome46,XX/46,XY chimerism
frSyndrome de chimère tétragamétiqueChimère 46,XX/46,XY
deTetragametischer Chimärismus46,XX/46,XY Chimerismus
esSíndrome de quimerismo tetragaméticoQuimerismo 46,XX/46,XY
itSindrome chimerismo tetragameticoChimerismo 46,XX/46,XY
nlTetragametisch chimerisme-syndroom46,XX/46,XY-chimerisme
ptQuimerismo tetragamético
plZespół chimeryzmu tetragametycznegoChimeryzm 46,XX/46,XY
csTetragametický chimérismusChimérismus 46,XX/46,XY
ukТетрагаметний химерізм46,XX/46,XY химерність
zh四配子异源嵌合体46,XX/46,XY嵌合体
trTetragametik kimerizm46, XX / 46, XY kimerizmi

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
ICD-10Q99.0Especificvalidated
ICD-11LD56Especificvalidated
MONDO0016045Evalidated
UMLSC0432480Evalidated

E exact · NTBT this ORPHAcode is narrower than the target · BTNT broader than the target · ND not decided.

3

Classification

Preferential parent (Orphanet linearisation):

Parents in the classifications (3):

No children.

4

Genes

0 direct

Orphanet records no gene directly on this code.

5

Prevalence and incidence

0 records

No prevalence record in this release.

6

HPO phenotypes

18 annotations · validated 2016-04-13
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0010987Abnormal cellular immune system morphology
HP:0000035Abnormal testis morphology
HP:0012145Abnormality of multiple cell lineages in the bone marrow
HP:0000137Abnormality of the ovary
HP:0000045Abnormality of the scrotum
HP:0000062Ambiguous genitalia
HP:0000048Bifid scrotum
HP:0010970Blood group antigen abnormality
HP:0008665Clitoral hypertrophy
HP:0000028Cryptorchidism
HP:0008723Gonadal dysgenesis with female appearance, male
HP:0001053Hypopigmented skin patches
HP:0000054Micropenis
HP:0012861Ovotestis
HP:0000051Perineal hypospadias
HP:0010459True hermaphroditism
Frequent (79-30%)
HP:0000954Single transverse palmar crease
Excluded (0%)
HP:0001263Global developmental delay

Run the differential on the 12 obligate / very frequent terms

Annotation source: 19777529[PMID]_20664426[PMID]_23726690[PMID]_24706113[PMID]_17430077[PMID]_1743077[PMID]_17917028[PMID]_19154517[PMID]_19255770[PMID]_20692777[PMID]_21554308[PMID]

7

Sources for this card