TY  - JOUR
A1  - Gerhard‐Hartmann, Elena
A1  - Jöhrens, Korinna
A1  - Schinagl, Lisa‐Marie
A1  - Zamó, Alberto
A1  - Rosenwald, Andreas
A1  - Anagnostopoulos, Ioannis
A1  - Rosenfeldt, Mathias
T1  - Epstein–Barr virus infection patterns in nodular lymphocyte‐predominant Hodgkin lymphoma
JF  - Histopathology
N2  - Aims
To investigate Epstein‐Barr virus (EBV) latency types in 19 cases of EBV‐positive nodular lymphocyte‐predominant Hodgkin lymphoma (NLPHL), as such information is currently incomplete.
Methods and results
Immunohistochemistry (IHC) for CD20, CD79a, PAX5, OCT2, CD30, CD15, CD3 and programmed cell death protein 1 was performed. For EBV detection, in‐situ hybridisation (ISH) for EBV‐encoded RNA (EBER) was employed combined with IHC for EBV‐encoded latent membrane protein (LMP)‐1, EBV‐encoded nuclear antigen (EBNA)‐2, and EBV‐encoded BZLF1. In 95% of the cases, neoplastic cells with features of Hodgkin and Reed–Sternberg (HRS) cells were present, mostly showing expression of CD30. In all cases, the B‐cell phenotype was largely intact, and delineation from classic Hodgkin lymphoma (CHL) was further supported by myocyte enhancer factor 2B (MEF2B) detection. All tumour cells were EBER‐positive except in two cases. EBV latency type II was most frequent (89%) and type I was rare. Cases with latency type I were CD30‐negative. Five cases contained some BZLF1‐positive and/or EBNA‐2‐positive bystander lymphocytes.
Conclusions
As HRS morphology of neoplastic cells and CD30 expression are frequent features of EBV‐positive NLPHL, preservation of the B‐cell transcription programme, MEF2B expression combined with NLPHL‐typical architecture and background composition facilitate distinction from CHL. EBER ISH is the method of choice to identify these cases. The majority present with EBV latency type II, and only rare cases present with latency type I, which can be associated with missing CD30 expression. The presence of occasional bystander lymphocytes expressing BZLF1 and/or EBNA‐2 and the partial EBV infection of neoplastic cells in some cases could indicate that EBV is either not primarily involved or is only a transient driver in the pathogenesis of EBV‐positive NLPHL.
KW  - EBV
KW  - Hodgkin lymphoma
KW  - latency type
KW  - NLPHL
Y1  - 2022
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-276327
VL  - 80
IS  - 7
SP  - 1071
EP  - 1080
ER  - 
TY  - JOUR
A1  - Hartmann, Sylvia
A1  - Plütschow, Annette
A1  - Mottok, Anja
A1  - Bernd, Heinz‐Wolfram
A1  - Feller, Alfred C.
A1  - Ott, German
A1  - Cogliatti, Sergio
A1  - Fend, Falko
A1  - Quintanilla‐Martinez, Leticia
A1  - Stein, Harald
A1  - Klapper, Wolfram
A1  - Möller, Peter
A1  - Rosenwald, Andreas
A1  - Engert, Andreas
A1  - Hansmann, Martin‐Leo
A1  - Eichenauer, Dennis A.
T1  - The time to relapse correlates with the histopathological growth pattern in nodular lymphocyte predominant Hodgkin lymphoma
JF  - American Journal of Hematology
N2  - Nodular lymphocyte predominant Hodgkin lymphoma (NLPHL) can present with different histopathological growth patterns. The impact of these histopathological growth patterns on relapse characteristics is unknown. We therefore analyzed paired biopsies obtained at initial diagnosis and relapse from 33 NLPHL patients who had received first‐line treatment within German Hodgkin Study Group (GHSG) trial protocols, and from a second cohort of 41 relapsed NLPHL patients who had been treated outside GHSG studies. Among the 33 GHSG patients, 21 patients presented with a typical growth pattern at initial diagnosis, whereas 12 patients had a variant histology. The histopathological growth patterns at initial diagnosis and at relapse were consistent in 67% of cases. A variant histology at initial diagnosis was associated with a shorter median time to lymphoma recurrence (2.8 vs 5.2 years; P = .0219). A similar tendency towards a shorter median time to lymphoma recurrence was observed for patients presenting with a variant histology at relapse, irrespective of the growth pattern at initial diagnosis. Results obtained from the 41 NLPHL patients who had been treated outside GHSG studies were comparable (median time to lymphoma recurrence for variant histology vs typical growth pattern at initial diagnosis: 1.5 vs 7.0 years). In conclusion, the histopathological growth pattern remains consistent at relapse in the majority of NLPHL cases, and has major impact on the time of relapse.
KW  - Hodgkin lymphoma
KW  - relapse
KW  - growth patterns
Y1  - 2019
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-212594
VL  - 94
IS  - 11
SP  - 1208
EP  - 1213
ER  - 
TY  - JOUR
A1  - Rosenfeldt, Mathias T.
A1  - Hartmann, Elena M.
A1  - Leng, Corinna
A1  - Rosenwald, Andreas
A1  - Anagnostopoulos, Ioannis
T1  - A case of nodular lymphocyte predominant Hodgkin lymphoma with unexpected EBV-latency type
JF  - Annals of Hematology
N2  - No abstract available.
KW  - nodular lymphcyte
KW  - Hodgkin lymphoma
Y1  - 2021
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-232571
SN  - 0939-5555
VL  - 100
ER  -