Table 1 Correlation between CALR mutations detected by Sanger Sequencing and CAL2-immunohistochemistry in samples obtained from bone marrow of patients with myeloproliferative neoplasms or other disorders and from control tissues

From: A new monoclonal antibody (CAL2) detects CALRETICULIN mutations in formalin-fixed and paraffin-embedded bone marrow biopsies

Disease type

No. of samples

No. of cases with detected mutations

  

Sanger sequencing

CAL2 IHC

MPN NOS

17

12

12

PMF

52

20

20

ET

59

20

20

PV

19

0

0

Myeloid neoplasms other than PV, ET and PMF

8

  

 RARS-T

1

0

0

 MDS with fibrosis

1

0

0

 RAEB-1

1

0

0

 CNL

1

0

0

 CML

1

0

0

 aCML

1

0

0

 Mastocytosis

2

0

0

BM with non-myeloid neoplasm

8

  

 CLL

3

0

0

 MCL

1

0

0

 HCL

1

0

0

 PTCL

1

0

0

 cHL

1

0

0

 MGUS

1

0

0

Non-neoplastic tissue

10

  

 BM in Iron deficiency

1

0

0

 BM in idiopathic thrombocyopenia

1

0

0

 Normal BM

4

0

0

 Tonsils

4

0

0

Total No

173

52

52

  1. Abbreviations: aCML, atypical chronic myeloid leukaemia, BCR-ABL1 negative; BM, bone marrow; CALR, CALRETICULIN; cHL, classical Hodgkin lymphoma; CLL, chronic lymphocytic leukaemia; CML, chronic myelogenous leukaemia, CNL, chronic neutrophilic leukaemia; ET, essential thrombocythaemia; HCL, hairy cell leukaemia; IHC, immunohistochemistry; MCL, mantle cell lymphoma; MDS, myelodysplastic syndrom; MGUS, monoclonal gammopathy of undetermined significance; MPN NOS, myeloproliferative neoplasm not otherwise specified, that is, MPN cases where the differential diagnosis between prefibrotic PMF and ET was not possible; PMF, primary myelofibrosis; PTCL, peripheral T-cell lymphoma; PV, polycythaemia vera; RAEB-1, refractory anaemia with excess blasts-1, BCR-ABL1 positive; RARS-T, refractory anaemia with ring sideroblasts in transformation.