Table 2 Recurrently detected copy number variants and mutations found in diffuse follicular lymphoma (dFL) compared with previously published studies of conventional follicular lymphoma (cFL) and marginal zone lymphoma (MZL).

From: CREBBP and STAT6 co-mutation and 16p13 and 1p36 loss define the t(14;18)-negative diffuse variant of follicular lymphoma

Copy number loss/CN-LOH

dFL % (N)*

cFL % (N)

p value

MZL % (N)

p value

 1p36

76.4% (42/55)

21.8% (158/724)

<0.0001

6.5% (47/726)

<0.0001

 16p13

38.5% (10/26)

9.1% (53/583)

<0.0001

7.6% (30/396)

<0.0001

 1p36 + 16p13

30.8% (8/26)

3.4% (8/233)

<0.0001

2.2% (4/178)

<0.0001

Mutation

dFL % (N)

cFL % (N)

p value

MZL % (N)

p value

 CREBBP

87.1% (27/31)

59.6% (374/627)

0.0021

6.9% (37/534)

<0.0001

 STAT6

87.1% (27/31)

10.4% (61/528)

<0.0001

0.6% (2/309)

<0.0001

 TNFRSF14

54.8% (17/31)

31.1% (202/649)

0.0094

3.1% (10/327)

<0.0001

 FOXO1

29.0% (9/31)

7.4% (30/331)

0.0027

1.3% (4/309)

<0.0001

 KMT2D

48.4% (15/31)

76.9% (464/603)

0.0009

11.2% (67/597)

<0.0001

 SOCS1

19.4% (6/31)

3.0% (12/270)

0.0056

1.0% (3/309)

<0.0001

 EZH2

29.0% (9/31)

19.2% (123/641)

0.1716

1.5% (7/469)

<0.0001

 CREBBP + STAT6

74.2% (23/31)

7.4% (35/421)

<0.0001

0.6% (2/309)

<0.0001

 CREBBP + STAT6 + TNFRSF14

38.7% (12/31)

2.8% (13/421)

<0.0001

0.3% (1/309)

<0.0001

 CREBBP/EP300 + KMT2D

41.9% (13/31)

56.0% (314/561)

0.1402

2.2% (11/502)

<0.0001

  1. CNVs in dFL detected in the present report and previously published studies*3,20 were grouped and compared with previously published studies of cFL4,5,6,7,8,9,10 and MZL26,29,38,39,40,41. Mutations in dFL detected in the present report and previously published studies*20,21 were grouped and compared with mutations found in previously published studies of cFL11,12,13,14,15,16,17,18,19 and MZL26,29,30,31,32,33,34,35,36,37. The prevalence of each alteration in dFL, cFL, and MZL are shown along with the total number of samples studied. Statistical significance for each alteration found in dFL is tested against the same rates in cFL and MZL, and the resultant p values are shown.
  2. *Two cases were removed from a previously published study20 of dFL in this aggregate analysis due to the presence of t(14;18) in those cases.