raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:98791

Alpha-thalassemia-intellectual disability syndrome linked to chromosome 16

Synonyms: ATR syndrome linked to chromosome 16 · ATR syndrome, deletion type · ATR-16 syndrome · Alpha thalassemia-intellectual disability syndrome, deletion type

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

A rare developmental defect during embryogenesis, a contiguous gene deletion syndrome, is a form of alpha-thalassemia characterized by microcytosis, hypochromia, normal hemoglobin (Hb) level or mild anemia, associated with developmental abnormalities.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enAlpha-thalassemia-intellectual disability syndrome linked to chromosome 16ATR syndrome linked to chromosome 16 · ATR syndrome, deletion type · ATR-16 syndrome · Alpha thalassemia-intellectual disability syndrome, deletion type
frSyndrome d'alpha-thalassémie-déficience intellectuelle associée au chromosome 16Syndrome ATR associé au chromosome 16 · Syndrome ATR type délétion · Syndrome ATR-16 · Syndrome d'alpha-thalassémie-déficience intellectuelle type délétion
deAlpha-Thalassämie-Intelligenzminderung-Syndrom, gekoppelt an Chr. 16ATR-16-Syndrom · ATR-Syndrom gekoppelt an Chr. 16 · ATR-Syndrom vom Deletions-Typ · Alpha-Thalassämie-Intelligenzminderung-Syndrom vom Deletions-Typ
esSíndrome de alfa talasemia-discapacidad intelectual ligado al cromosoma 16Síndrome ATR ligado al cromosoma 16 · Síndrome ATR tipo deleción · Síndrome ATR-16 · Síndrome de alfa talasemia-discapacidad intelectual tipo deleción
itSindrome alfa talassemia-disabilità intellettiva associata al cromosoma 16Sindrome ATR legata al cromosoma 16 · Sindrome ATR, tipo delezione · Sindrome ATR-16 · Sindrome alfa talassemia-deficit cognitivo, tipo delezione · Sindrome alfa talassemia-disabilità cognitiva, tipo delezione
nlAlfa-thalassemie - intellectuele achterstand-syndroom gekoppeld aan chromosoom 16ATR-16-syndroom · ATR-syndroom gekoppeld aan chromosoom 16 · ATR-syndroom, deletie-type · Alfa-thalassemie - intellectuele achterstand-syndroom, deletie-type
ptSíndrome de alfa-talassemia-perturbação do desenvolvimento intelectual ligada ao cromossoma 16Síndrome ATR ligado ao cromossoma 16 · Síndrome ATR, tipo delecional · Síndrome ATR-16 · Síndrome de alfa-talassemia-perturbação do desenvolvimento intelectual, tipo delecional
plZespół alfa-talasemii i niepełnosprawności intelektualnej sprzężony z chromosomem 16Zespół alfa-talasemii i niepełnosprawności intelektualnej, typ delecyjny · Zespół alfa-talasemii i upośledzenia umysłowego · Zespół ATR sprzężony z chromosomem 16 · Zespół ATR, typ delecyjny · Zespół ATR-16
csSyndrom zahrnující alfa-talasémii a mentální retardaci, vázaný na chromozom 17ART syndrom vázaný na chromozom 16 · ART-16 syndrom · Syndrom zahrnující alfa-talasémii a mentální retardaci · ART syndrom, deleční typ · Syndrom zahrnující alfa-talasémii a mentální retardaci, deleční typ
ukСиндром альфа-таласемії-інтелектуальної недостатності, повязаний з хромосомою 16Синдром альфа-таласемії - інтелектуальної недостатності, делеційний тип · Синдром ATR, зчеплений з хромосомою 16 · Синдром ATR, тип делеції · Синдром ATR-16
zh16号染色体连锁α-地中海贫血-智力障碍综合征缺失型α-地中海贫血-智力障碍综合征
tr16. Kromozom bağlantılı alfa-talasemi-zihinsel yetersizlik sendromuATR-16 sendromu · ATR sendromu, delesyon tipi · 16. kromozoma bağlı ATR sendromu · Alfa talasemi-zihinsel yetersizlik sendromu, delesyon tipi

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM141750Evalidated
ICD-10D56.0NTBTattributedvalidated
ICD-113A50.1NTBTindexvalidated
MONDO7716Evalidated
MeSHC563050Evalidated
UMLSC0795917Evalidated

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

2 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
HBA1Role in the phenotype ofAssessedHGNC:4823ENSG0000020617214180016p13.3hemoglobin subunit alpha 1
HBA2Role in the phenotype ofAssessedHGNC:4824ENSG0000018853614185016p13.3hemoglobin subunit alpha 2
5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families20 casesWorldwideCase(s)Validated[EXPERT]
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidatedORPHANET

Value is Orphadata's ValMoy: the mean estimate per 100 000 for prevalence and incidence, the number of cases or families for case reports.

6

HPO phenotypes

32 annotations · validated 2016-06-01
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0002167Abnormality of speech or vocalization
HP:0012378Fatigue
HP:0011903HbH hemoglobin
HP:0001249Intellectual disability
HP:0001935Microcytic anemia
Frequent (79-30%)
HP:0009906Aplasia/Hypoplasia of the earlobes
HP:0000337Broad forehead
HP:0000978Bruising susceptibility
HP:0000028Cryptorchidism
HP:0000494Downslanted palpebral fissures
HP:0000286Epicanthus
HP:0001508Failure to thrive
HP:0000348High forehead
HP:0000218High palate
HP:0000316Hypertelorism
HP:0001252Hypotonia
HP:0000272Malar flattening
HP:0000252Microcephaly
HP:0000347Micrognathia
HP:0000768Pectus carinatum
HP:0000358Posteriorly rotated ears
HP:0000278Retrognathia
HP:0000470Short neck
HP:0004322Short stature
HP:0001831Short toe
HP:0001762Talipes equinovarus
HP:0000431Wide nasal bridge
Occasional (29-5%)
HP:0100840Aplasia/Hypoplasia of the eyebrow
HP:0001371Flexion contracture
HP:0002007Frontal bossing
HP:0000047Hypospadias
HP:0009891Underdeveloped supraorbital ridges

Run the differential on the 5 obligate / very frequent terms

7

Sources for this card