Myeloid/lymphoid neoplasm associated

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Myeloid/lymphoid neoplasm associated with FGFR1 rearrangement

ORPHA:168953Disease

Also called 8p11 myeloproliferative syndrome · Stem cell leukemia/lymphoma

What it is

A rare, malignant, neoplastic disease characterized by clonal proliferation of myeloid and/or lymphoid precursors harboring translocations or insertions involving the chromosome band 8p11 and the FGFR1 gene, in the blood, bone marrow and often other tissues as well (spleen, liver, lymph nodes, breast, etc.). It usually presents as myeloproliferative neoplasm with eosinophilia, T lymphoblastic lymphoma with eosinophilia or, less frequently, acute myeloid leukemia. The presenting signs and symptoms include eosinophilia, leukocytosis with leukemoid reaction, monocytosis, fatigue, sweating, weight loss, lymphadenopathy, splenomegaly and/or hepatomegaly. Extranodal involvement may include the tonsils, lungs and breasts.

Key facts

Classified as
Disease

Gene

FGFR1Part of a fusion gene

ICD-10 codes

C92.7filed under a broader ICD-10 category — shared with 3 other rare diseases

ICD-10 has no distinct code for most rare diseases, so many are filed under the nearest available one. A shared code identifies the group, not this disease — the ORPHAcode above is what identifies it.

Related health topics

Reached through the ICD-10 categories this disease is filed under, so these describe the broader group rather than this disease specifically.

Cross-references

MONDO 0013296MONDO 13296OMIM 613523UMLS C3150773

Orphadata Science: Free access data from Orphanet. © INSERM 1999. Data version 2026-06-23. Available under CC BY 4.0. This is a reference, not medical advice.

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