Table 1 The effects of knocking out murine equivalents of 5q genes

From: 5q– myelodysplastic syndromes: chromosome 5q genes direct a tumor-suppression network sensing actin dynamics

Mouse phenotype

Drf1

Egr1

Apc

Npm1

Elevated WBC

+

+

+

Lymphopenia

+

+

Monocytosis

+

+

+

Granulocytosis

+

+

+

Anemia

+

+

+

+

Thrombocytosis

+

Thrombocytopenia

+

+

+

Splenomegaly

+

+

+

Hepatomegaly

+

Extramedullary hematopoiesis

+

+

+

Loss of splenic organization

+

+

+

Myeloproliferative defects

+

+

+

Ineffective erythropoiesis in

 Bone marrow

+

+

+

+

 Spleen

+

+

+

+

  1. Abbreviations: Egr1, early growth response-1; Npm1, nucleophosmin-1.
  2. Unique features:
  3. Drf1, myeloproliferative defects are age dependent.
  4. Egr1, increased rate of myeloproliferation with shorter latency; an absence of blasts.
  5. Apc, depletion of hematopoietic stem cell and hematopoietic progenitor cell pools lead to immune failure.
  6. Npm1, numerical and structural chromosomal abnormalities in genomic DNA; 75% myeloid malignancy, 25% B- and T-cell malignancy.