raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:2584

Classic mycosis fungoides

Synonyms: Mycosis fungoides, Alibert-Bazin type

Type
Disease
Group
Disorder
Inheritance
Multigenic/multifactorial, Not applicable
Age of onset
Adult
Status
active

A form of cutaneous T-cell lymphoma characterized by slow progression from patches to more infiltrated plaques and eventually to tumors. In classic mycosis fungoides (MF), extracutaneous involvement may occur.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enClassic mycosis fungoidesMycosis fungoides, Alibert-Bazin type
frMycosis fongoïde classiqueMycosis fongoïde type Alibert-Bazin
deKlassische Mycosis fungoidesMycosis fungoides Typ Alibert-Bazin
esMicosis fungoide clásicaMicosis fungoide tipo Alibert-Bazin
itMicosi fungoide classicaMicosi fungoide tipo Alibert-Bazin
nlKlassieke mycosis fungoidesMycosis fungoides, Alibert-Bazin-type
ptMicose fungoide clássicaMicose fungoide, tipo Alibert-Bazin
plKlasyczny ziarniniak grzybiastyZiarniniak grzybiasty typu Aliberta i Bazina
csKlasická forma mycosis fungoidesMycosis fungoides, typ Alibert-Bazin
ukКласичні грибкові мікозиМікоз фунгоїдний, тип Аліберта-Базена
zh经典型蕈样真菌病蕈样肉芽肿病,Alibert-Bazin亚型
trKlasik mikoz fungoidesMikoz fungoides, Alibert-Bazin tipi

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM254400Evalidated
ICD-10C84.0NTBTattributedvalidated
ICD-112B01Especificvalidated
ICD-11XH8R56Especificvalidated
MONDO0009691Evalidated
UMLSC4707404Evalidated
GARD3863Evalidated

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 (1):

No children.

4

Genes

3 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
TNFRSF1BDisease-causing somatic mutation(s) inAssessedHGNC:11917ENSG000000281371911911p36.22TNF receptor superfamily member 1B26258847[PMID]
CD28Part of a fusion gene inAssessedHGNC:1653ENSG000001785621867602q33.2CD28 molecule26258847[PMID]
CTLA4Part of a fusion gene inAssessedHGNC:2505ENSG000001635991238902q33.2cytotoxic T-lymphocyte associated protein 426258847[PMID]
5

Prevalence and incidence

3 records
TypeClassValueAreaQualificationValidationSource
Annual incidence1-9 / 1 000 0000.58 / 100 000United StatesValue and classValidated32141115[PMID]
Annual incidence1-9 / 1 000 0000.5 / 100 000EuropeValue and classValidated[EXPERT]
Point prevalenceUnknown—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

29 annotations · validated 2024-09-20
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0004332Abnormal lymphocyte morphology
HP:0000958Dry skin
HP:0000964Eczematoid dermatitis
HP:0010783Erythema
HP:0002665Lymphoma
HP:0008069Neoplasm of the skin
HP:0000989Pruritus
HP:0200035Skin plaque
HP:0000988Skin rash
Frequent (79-30%)
HP:0001596Alopecia
HP:0012192Cutaneous T-cell lymphoma
HP:0025475Erythematous macule
HP:0001053Hypopigmented skin patches
HP:0007400Irregular hyperpigmentation
HP:0002716Lymphadenopathy
HP:0001029Poikiloderma
Occasional (29-5%)
HP:0000492Abnormal eyelid morphology
HP:0001597Abnormal nail morphology
HP:0005561Abnormality of bone marrow cell morphology
HP:0007488Diffuse skin atrophy
HP:0000969Edema
HP:0001019Erythroderma
HP:0002240Hepatomegaly
HP:0000962Hyperkeratosis
HP:0200042Skin ulcer
HP:0001744Splenomegaly
Very rare (<4-1%)
HP:0001945Fever
HP:0030166Night sweats
HP:0001824Weight loss

Run the differential on the 9 obligate / very frequent terms

Annotation source: 37124514[PMID]_27871620[PMID]

7

Sources for this card