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Sezary syndrome is the leukaemic form of skin lymphoma: the whole skin turns red and scaly, the lymph nodes swell, and malignant T cells circulate in the blood. It is treated to control rather than cure, with photopheresis, the antibody mogamulizumab, and drugs such as bexarotene and interferon, and a stem cell transplant is the only treatment that can cure it in fit patients.
WHO-HAEM5 keeps Sezary syndrome as a distinct entity from mycosis fungoides, defined by the triad of erythroderma, generalised lymphadenopathy and clonal neoplastic T cells in skin, nodes and blood, with a blood tumour burden of 1,000 or more Sezary cells per microlitre or equivalent flow cytometry criteria (Alaggio 2022; EORTC 2023). The EORTC consensus recommendations, updated in 2017 and 2023, set the stage-adapted treatment for mycosis fungoides and Sezary syndrome, noting that controlled studies remain few; the 2023 update incorporates chlormethine, brentuximab vedotin and mogamulizumab, recommends pegylated interferon after the withdrawal of unpegylated interferons, and adds guidance on supportive care and older patients (EORTC 2017; EORTC 2023). Mogamulizumab, the anti-CCR4 antibody, is the drug with a randomised trial in this setting (MAVORIC, linked here).
How it differs from its parent: the parent page covers mycosis fungoides, in which most patients have a normal life expectancy with skin-directed treatment; Sezary syndrome is advanced-stage disease by definition, blood-borne, immunosuppressing and life-shortening, treated systemically from the outset.
How common: no figure for the syndrome alone in the sources read; cutaneous T-cell lymphoma overall is about 6 per million a year (Criscione and Weinstock 2007).
Treatment: extracorporeal photopheresis with or without interferon or bexarotene as first-line systemic therapy; mogamulizumab (MAVORIC) or low-dose methotrexate, pralatrexate, brentuximab vedotin in CD30-positive disease, or histone deacetylase inhibitors later; allogeneic stem cell transplant for fit patients with a response; skin-directed therapy and infection control throughout (EORTC 2023).
A small fraction of cutaneous T-cell lymphoma, which itself had an age-adjusted incidence of 6.4 per million a year in the United States over 1973 to 2002, higher in men (8.7) than women (4.6) and in black (9.0) than white (6.1) Americans (Criscione and Weinstock 2007). No registry figure for Sezary syndrome alone is in the sources read.
Leukaemias, myeloma and MDS live in the marrow and blood; lymphomas grow in lymph nodes and spleen. The node stations are the disease map, not a route of spread, and staging counts them.
In lymphoma the node stations are the disease itself; staging (Ann Arbor / Lugano) counts how many regions and sides of the diaphragm are involved.
Same organ: High-grade B-cell lymphoma with MYC and BCL2 rearrangements (double-hit lymphoma), Mediastinal grey zone lymphoma, Primary effusion lymphoma, Plasmablastic lymphoma, T-cell/histiocyte-rich large B-cell lymphoma, EBV-positive diffuse large B-cell lymphoma, Primary large B-cell lymphoma of the testis, Gastric MALT lymphoma, Ocular adnexal MALT lymphoma, Extranodal NK/T-cell lymphoma, Adult T-cell leukaemia/lymphoma, ALK-positive anaplastic large cell lymphoma, ALK-negative anaplastic large cell lymphoma, Breast implant-associated anaplastic large cell lymphoma, Primary cutaneous anaplastic large cell lymphoma, Lymphomatoid papulosis, Mycosis fungoides, Enteropathy-associated T-cell lymphoma, Monomorphic epitheliotropic intestinal T-cell lymphoma, Extranodal marginal zone lymphoma of mucosa-associated lymphoid tissue (MALT lymphoma), Splenic marginal zone lymphoma, Nodal marginal zone lymphoma, Primary cutaneous marginal zone lymphoma, Primary cutaneous follicle centre lymphoma, Nodal T-follicular helper cell lymphoma, angioimmunoblastic type (angioimmunoblastic T-cell lymphoma), Hepatosplenic T-cell lymphoma, Intravascular large B-cell lymphoma, Lymphomatoid granulomatosis, T-cell prolymphocytic leukaemia, Splenic B-cell lymphoma/leukaemia with prominent nucleoli (formerly B-cell prolymphocytic leukaemia and hairy cell leukaemia variant), T-cell large granular lymphocytic leukaemia, Mixed-phenotype acute leukaemia, Myeloid leukaemia of Down syndrome, Burkitt leukaemia, Marginal zone lymphoma, Cutaneous T-cell lymphoma (mycosis fungoides and Sezary syndrome), Primary mediastinal (thymic) large B-cell lymphoma, Leukaemia (all types), Acute myeloid leukaemia, Acute lymphoblastic leukaemia, Chronic lymphocytic leukaemia, Chronic myeloid leukaemia (CML), Diffuse large B-cell lymphoma, Follicular lymphoma, Hodgkin lymphoma, Mantle cell lymphoma, Multiple myeloma, Non-Hodgkin lymphoma (all types), Myelodysplastic syndromes / neoplasms (MDS), Myeloproliferative neoplasms (PV, ET, myelofibrosis), Polycythaemia vera (PV), Essential thrombocythaemia (ET), Waldenström macroglobulinaemia, Hairy cell leukaemia, Peripheral T-cell lymphomas (including cutaneous T-cell lymphoma), Blastic plasmacytoid dendritic cell neoplasm (BPDCN), Burkitt lymphoma, HIV-associated (AIDS-related) lymphomas, Chronic myelomonocytic leukaemia and MDS/MPN overlap neoplasms, Systemic mastocytosis, Erdheim-Chester disease, Rosai-Dorfman disease and other histiocytic neoplasms, Langerhans cell histiocytosis (LCH), Post-transplant lymphoproliferative disorder (PTLD), FLT3-mutated acute myeloid leukaemia, IDH1- and IDH2-mutated acute myeloid leukaemia, NPM1-mutated and KMT2A-rearranged acute myeloid leukaemia, Secondary and therapy-related acute myeloid leukaemia, Acute promyelocytic leukaemia, Acute myeloid leukaemia in older or unfit patients, Smouldering multiple myeloma, Newly diagnosed multiple myeloma, transplant-eligible, Newly diagnosed multiple myeloma, transplant-ineligible, Relapsed or refractory multiple myeloma, Plasma cell leukaemia, Lower-risk myelodysplastic syndromes, Higher-risk myelodysplastic syndromes, Chronic lymphocytic leukaemia, first treatment, Relapsed or refractory chronic lymphocytic leukaemia, Richter transformation of chronic lymphocytic leukaemia, Chronic myeloid leukaemia, chronic phase, Chronic myeloid leukaemia, accelerated and blast phase, Primary myelofibrosis, Standard-risk B-cell acute lymphoblastic leukaemia in children, High-risk acute lymphoblastic leukaemia in children (high-risk B-ALL and T-ALL), Philadelphia chromosome-positive acute lymphoblastic leukaemia in children (Ph-positive ALL), Philadelphia chromosome-like acute lymphoblastic leukaemia (Ph-like or BCR::ABL1-like ALL), Infant acute lymphoblastic leukaemia (KMT2A-rearranged, under one year), Relapsed and refractory acute lymphoblastic leukaemia in children, Acute myeloid leukaemia in children, Erdheim-Chester disease, Rosai-Dorfman-Destombes disease, Single-system Langerhans cell histiocytosis (bone, skin or one other organ), Multisystem Langerhans cell histiocytosis (with or without risk-organ involvement), Indolent and smouldering systemic mastocytosis, Advanced systemic mastocytosis (aggressive SM, SM with an associated haematological neoplasm, mast cell leukaemia), Early-stage classical Hodgkin lymphoma (stage I to II), Advanced-stage classical Hodgkin lymphoma (stage III to IV), Nodular lymphocyte-predominant Hodgkin lymphoma (nodular lymphocyte-predominant B-cell lymphoma), Relapsed and refractory classical Hodgkin lymphoma
Nothing recorded yet.
Nothing recorded yet.
Also on OnCo: Symptoms and red flags · Early detection roadmap.
Extracorporeal photopheresis with or without interferon or bexarotene (EORTC 2023).
Mogamulizumab (MAVORIC), methotrexate, pralatrexate, brentuximab vedotin for CD30-positive disease, romidepsin or vorinostat; allogeneic transplant for fit responders.
Sezary syndrome is the leukaemic form: erythroderma covering most of the body, lymphadenopathy, intractable itch and a clone of malignant T cells in the blood. It is treated as advanced disease from the start, and treatment has to reduce the blood compartment, not only the skin. Extracorporeal photopheresis is the treatment most specific to it: the patient's white cells are drawn off, exposed to methoxsalen and ultraviolet A light, and returned, usually on two consecutive days every two to four weeks. It is well tolerated, works slowly over months, and is often combined with interferon alfa or bexarotene. It has been approved for the skin manifestations of cutaneous T-cell lymphoma in the United States since 1999. Mogamulizumab is the systemic drug of choice where the blood is heavily involved, because in MAVORIC the response rate in the blood compartment was 68 per cent, far above its skin response; median progression-free survival was 7.7 against 3.1 months for vorinostat. Other options are bexarotene, interferon, low-dose methotrexate, romidepsin, alemtuzumab at low subcutaneous dose, chlorambucil with prednisolone for an older patient, and allogeneic transplant with reduced-intensity conditioning for fit younger patients, which is the only treatment that produces durable remission. Skin care, control of itch and prevention of staphylococcal sepsis matter at least as much as the lymphoma treatment; erythrodermic skin loses heat, fluid and protein and is an open door to infection.
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Query for this cancer: (TITLE:"Sezary syndrome" OR ABSTRACT:"Sezary syndrome" OR TITLE:"Sézary syndrome" OR ABSTRACT:"Sézary syndrome" OR TITLE:"Sezary disease" OR ABSTRACT:"Sezary disease" OR TITLE:"Sézary disease" OR ABSTRACT:"Sézary disease" OR TITLE:"Leukaemic cutaneous T-cell lymphoma" OR ABSTRACT:"Leukaemic cutaneous T-cell lymphoma" OR TITLE:"Sezary syndrome erythroderma with blood involvement" OR ABSTRACT:"Sezary syndrome erythroderma with blood involvement") AND (treatment OR therapy OR trial OR survival OR diagnosis). Results are unfiltered search hits about Sezary syndrome, not a curated reading list.
The targets of this cancer's medicines and the ones linked to it directly.
Cases by country, the UK and NHS pathway and other country lenses, the expert centres with trials on record, and the centres named on this cancer's subtypes.
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Breathing very fast, confusion or slurred speech, blue, pale or blotchy skin, a very high or very low temperature, shivering, or a rash that does not fade when pressed: the NHS says call 999 or go to A and E, and do not drive yourself.
Bleeding that does not stop by itself, bleeding from more than one site, or new bruising in several places or one large area.
Any new neurological symptom that is not explained. Brentuximab vedotin carries a boxed warning for progressive multifocal leukoencephalopathy, a brain infection; the label says to hold the drug and investigate at the first suspicion.
Macmillan lists difficulty passing urine, loss of bladder or bowel control and constipation among the signs of spinal cord compression and says to contact the hospital straight away. If you cannot reach anyone, go to A and E and say you have lymphoma and symptoms of spinal cord compression.
Temperature of 38 C or higher, or feeling shivery and unwell even without a fever. Antibody-drug conjugates suppress the bone marrow, and several carry a boxed warning for severe neutropenia.
Tingling, numbness or weakness that affects walking or using the hands; peripheral neuropathy is common with the vedotin (MMAE) payload and doses are reduced or stopped at grade 2 to 3.
See all on the product pages:Brentuximab vedotinCentral venous access (port, PICC line)ChlorambucilFebrile neutropeniaHypogammaglobulinaemia and infection risk after B-cell therapiesMetastatic spinal cord compression (MSCC)MethotrexateNeutropeniaPralatrexate·Printable cards in the navigator
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