raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:47612

Felty syndrome

Synonyms: Splenomegaly-neutropenia-rheumatoid arthritis syndrome

Type
Disease
Group
Disorder
Inheritance
Unknown
Age of onset
Adult
Status
active

Felty syndrome (FS), also known as ''super rheumatoid'' disease, is a severe form of rheumatoid arthritis (RA), characterized by a triad of RA, splenomegaly and neutropenia, resulting in susceptibility to bacterial infections.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enFelty syndromeSplenomegaly-neutropenia-rheumatoid arthritis syndrome
frSyndrome de Felty
deFelty-SyndromSplenomegalie-Neutropenie-rheumatoide Arthritis-Syndrom
esSíndrome de FeltySíndrome de esplenomegalia-neutropenia-artritis reumatoide
itSindrome di FeltySindrome splenomegalia-neutropenia-artrite reumatoide
nlSyndroom van FeltySplenomegalie - neutropenie - reumatoïde artritis-syndroom
ptFelty syndrome
plZespół Felty'egoZespół splenomegalia-neutropenia-reumatoidalne zapalnie stawów
csFeltyho syndromSyndrom zahrnující splenomegalii, neutropenii a revmatoidní artritidu
ukСиндром ФелтіСиндром спленомегалії-нейтропенії-ревматоїдного артриту
zhFelty综合征脾大-嗜中性白血球减少症-风湿性关节炎综合征
trFelty sendromuSplenomegali-nötropeni-romatoid artrit sendromu

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM134750Evalidated
ICD-10M05.0NTBTattributedvalidated
ICD-11FA20.0NTBTindexvalidated
MONDO0007603Evalidated
MeSHD005258Evalidated
UMLSC0015773Evalidated
GARD8234Evalidated
MedDRA10016386Evalidated

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 (2):

No children.

4

Genes

0 direct

Orphanet records no gene directly on this code.

5

Prevalence and incidence

1 record
TypeClassValueAreaQualificationValidationSource
Point prevalenceUnknown—WorldwideClass onlyNot yet validatedORPHANET

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

36 annotations · validated 2016-06-01
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0001367Abnormal joint morphology
HP:0002829Arthralgia
HP:0001369Arthritis
HP:0002960Autoimmunity
HP:0001875Decreased total neutrophil count
HP:0002721Immunodeficiency
HP:0001376Limitation of joint mobility
HP:0002797Osteolysis
HP:0002719Recurrent infections
HP:0002205Recurrent respiratory infections
HP:0001482Subcutaneous nodule
HP:0100769Synovitis
Frequent (79-30%)
HP:0004332Abnormal lymphocyte morphology
HP:0001903Anemia
HP:0000389Chronic otitis media
HP:0002716Lymphadenopathy
HP:0100776Recurrent pharyngitis
HP:0006532Recurrent pneumonia
HP:0012384Rhinitis
HP:0000246Sinusitis
HP:0001744Splenomegaly
HP:0001824Weight loss
Occasional (29-5%)
HP:0005528Bone marrow hypocellularity
HP:0100658Cellulitis
HP:0100534Episcleritis
HP:0007440Generalized hyperpigmentation
HP:0002240Hepatomegaly
HP:0007400Irregular hyperpigmentation
HP:0002665Lymphoma
HP:0001701Pericarditis
HP:0009830Peripheral neuropathy
HP:0002102Pleuritis
HP:0002206Pulmonary fibrosis
HP:0000010Recurrent urinary tract infections
HP:0100806Sepsis
HP:0001873Thrombocytopenia

Run the differential on the 12 obligate / very frequent terms

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Sources for this card