Image-guided lymph node core-needle biopsy predicts survival in mycosis fungoides and Sézary syndrome.
Journal
The British journal of dermatology
ISSN: 1365-2133
Titre abrégé: Br J Dermatol
Pays: England
ID NLM: 0004041
Informations de publication
Date de publication:
08 2021
08 2021
Historique:
revised:
07
12
2020
received:
15
09
2020
accepted:
30
12
2020
pubmed:
6
1
2021
medline:
21
9
2021
entrez:
5
1
2021
Statut:
ppublish
Résumé
The prognosis of Sézary syndrome (SS) and mycosis fungoides (MF) depends on lymph node (LN) involvement. The usefulness of LN image-guided core-needle biopsies (CNBs), instead of surgical sampling, has been poorly evaluated. To determine the prognostic value of LN CNB in MF/SS. A retrospective search was conducted to identify all LN biopsy specimens of MF/SS between 2008 and 2019. Biopsies were staged according to the International Society for Cutaneous Lymphomas/European Organisation for Research and Treatment of Cancer (ISCL/EORTC) criteria. We performed immunolabelling and determined the tumour clone frequency (TCF) by high-throughput sequencing of the T-cell receptor beta locus. We included 119 consecutive biopsies from 100 patients, 45 with MF and 55 with SS. N1, N2 and N3 stages were diagnosed in 34 (29%), 26 (22%) and 59 (49%) cases, respectively. The TCF, Ki67 index, and percentage of cells positive for thymocyte selection-associated high mobility group box protein (TOX), programmed cell death protein 1 (PD1), killer cell immunoglobulin-like receptor 3DL2 (KIR3DL2) and cluster of differentiation (CD)30 were all positively correlated with the N stage. Median overall survival (OS) for N1/N2 vs. N3 patients was 42 months (range 26-not reached) vs. 14 months (range 5-30), respectively (P < 0·001). In univariate analyses, an age > 75 years, LN short-axis diameter > 15 mm, N3 stage, presence of large-cell transformation, TOX > 60%, PD1 > 25%, Ki67 > 30%, KIR3DL2 > 15%, CD30 > 10% and TCF > 25% were identified as adverse prognostic factors. In multivariate analyses, only an age > 75 years and Ki67 index > 30% were associated with reduced OS. We developed a new prognostic index associating the N stage and the Ki67 index, which better discriminates N3 patients with poor prognosis. CNB allows an objective assessment of the LN involvement in MF/SS, relevant for staging and prognosis.
Sections du résumé
BACKGROUND
The prognosis of Sézary syndrome (SS) and mycosis fungoides (MF) depends on lymph node (LN) involvement. The usefulness of LN image-guided core-needle biopsies (CNBs), instead of surgical sampling, has been poorly evaluated.
OBJECTIVES
To determine the prognostic value of LN CNB in MF/SS.
METHODS
A retrospective search was conducted to identify all LN biopsy specimens of MF/SS between 2008 and 2019. Biopsies were staged according to the International Society for Cutaneous Lymphomas/European Organisation for Research and Treatment of Cancer (ISCL/EORTC) criteria. We performed immunolabelling and determined the tumour clone frequency (TCF) by high-throughput sequencing of the T-cell receptor beta locus.
RESULTS
We included 119 consecutive biopsies from 100 patients, 45 with MF and 55 with SS. N1, N2 and N3 stages were diagnosed in 34 (29%), 26 (22%) and 59 (49%) cases, respectively. The TCF, Ki67 index, and percentage of cells positive for thymocyte selection-associated high mobility group box protein (TOX), programmed cell death protein 1 (PD1), killer cell immunoglobulin-like receptor 3DL2 (KIR3DL2) and cluster of differentiation (CD)30 were all positively correlated with the N stage. Median overall survival (OS) for N1/N2 vs. N3 patients was 42 months (range 26-not reached) vs. 14 months (range 5-30), respectively (P < 0·001). In univariate analyses, an age > 75 years, LN short-axis diameter > 15 mm, N3 stage, presence of large-cell transformation, TOX > 60%, PD1 > 25%, Ki67 > 30%, KIR3DL2 > 15%, CD30 > 10% and TCF > 25% were identified as adverse prognostic factors. In multivariate analyses, only an age > 75 years and Ki67 index > 30% were associated with reduced OS. We developed a new prognostic index associating the N stage and the Ki67 index, which better discriminates N3 patients with poor prognosis.
CONCLUSIONS
CNB allows an objective assessment of the LN involvement in MF/SS, relevant for staging and prognosis.
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
419-427Commentaires et corrections
Type : CommentIn
Type : CommentIn
Informations de copyright
© 2021 British Association of Dermatologists.
Références
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