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Chokri Ben Lamine: Evans Syndrome Key Clinical Insights
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Feb 16, 2026, 13:56

Chokri Ben Lamine: Evans Syndrome Key Clinical Insights

Chokri Ben Lamine, Adult Hematology and SCT Assistant Consultant at Oncology Center of Excellence at King Faisal Specialist Hospital and Research Center, shared a post on X.

“Evans Syndrome – High-Yield Tweet Pearls (Autoimmune hemolytic anemia with immune thrombocytopenia, with or without neutropenia)

  • Definition: Presence of at least two autoimmune cytopenias
  • Classic: AIHA and ITP
  • With or Without Autoimmune neutropenia
  • Can be simultaneous or sequential
  • Chronic and relapsing course common

Pathophysiology

  • Loss of immune tolerance
  • Autoantibodies against RBCs and platelets
  • Often polyclonal B-cell activation
  • T-reg dysfunction implicated
  • Secondary forms frequent

Secondary Causes (ALWAYS Screen)

  • SLE
  • CLL
  • CVID
  • ALPS
  • Lymphoma
  • Chronic infections (HIV, HCV)
  • CTD spectrum
  • Post-transplant immune dysregulation

Diagnosis

  • DAT positive (warm AIHA commonest)
  • Elevated LDH
  • Increased Indirect bilirubin
  • Reduced Haptoglobin
  • Reticulocytosis (unless marrow suppressed)
  • Isolated thrombocytopenia component
  • Bone marrow usually compensatory

Differential

  • TTP (schistocytes!)
  • DIC
  • Drug-induced cytopenia
  • Aplastic anemia
  • Hypersplenism

Treatment

  • First-line: Steroids
  • Prednisone 1–2 mg/kg
  • IVIG for severe thrombocytopenia
  • Transfuse RBCs if symptomatic
  • Platelets if life-threatening bleed

Second-Line

  • Rituximab (strong evidence)
  • Splenectomy (selected)
  • MMF
  • Azathioprine
  • Cyclosporine
  • Sirolimus (emerging data)
  • Thrombopoietin agonists in refractory ITP component

Severe Disease

  • Can progress to multi-lineage cytopenia
  • Infection risk high (from therapy and disease)
  • Monitor IgG levels
  • Vaccinate if planning splenectomy

Prognosis

  • Chronic relapsing pattern typical
  • Secondary forms have worse outcome
  • Mortality mainly from infection or bleeding
  • Early recognition and secondary workup critical

MCQ

Key diagnostic clue in Evans syndrome?

  1. Schistocytes
  2. DAT positive and thrombocytopenia
  3. Severe coagulopathy
  4. Pancytopenia with hypocellular marrow

Answer: B

OSCE Scenario

35-year-old with fatigue and petechiae

Hb 7 g/dL, Platelets 18 ×10⁹/L

DAT positive

  • Start steroids immediately
  • Screen for SLE/CLL/HIV
  • Consider IVIG if bleeding
  • Plan rituximab if steroid-refractory

Bottom Line

  • Evans: autoimmune multi-lineage cytopenia
  • Treat aggressively
  • Always search for secondary cause”

Find more posts featuring Chokri Ben Lamine on Hemostasis Today.

AIHA autoimmune disease Autoimmune Hemolytic Anemia Blood Disorders Chokri Ben Lamine Evans Syndrome Health Hematology Hemostasis Hemostasis News Hemostasis Today Immune thrombocytopenia IVIG Medicine Neutropenia Prednisone SLE thrombosis
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