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. 2021 Feb;124(4):777-785.
doi: 10.1038/s41416-020-01153-4. Epub 2020 Nov 16.

Human papilloma virus (HPV) integration signature in Cervical Cancer: identification of MACROD2 gene as HPV hot spot integration site

Collaborators, Affiliations

Human papilloma virus (HPV) integration signature in Cervical Cancer: identification of MACROD2 gene as HPV hot spot integration site

Maud Kamal et al. Br J Cancer. 2021 Feb.

Erratum in

Abstract

Background: Cervical cancer (CC) remains a leading cause of gynaecological cancer-related mortality with infection by human papilloma virus (HPV) being the most important risk factor. We analysed the association between different viral integration signatures, clinical parameters and outcome in pre-treated CCs.

Methods: Different integration signatures were identified using HPV double capture followed by next-generation sequencing (NGS) in 272 CC patients from the BioRAIDs study [NCT02428842]. Correlations between HPV integration signatures and clinical, biological and molecular features were assessed.

Results: Episomal HPV was much less frequent in CC as compared to anal carcinoma (p < 0.0001). We identified >300 different HPV-chromosomal junctions (inter- or intra-genic). The most frequent integration site in CC was in MACROD2 gene followed by MIPOL1/TTC6 and TP63. HPV integration signatures were not associated with histological subtype, FIGO staging, treatment or PFS. HPVs were more frequently episomal in PIK3CA mutated tumours (p = 0.023). Viral integration type was dependent on HPV genotype (p < 0.0001); HPV18 and HPV45 being always integrated. High HPV copy number was associated with longer PFS (p = 0.011).

Conclusions: This is to our knowledge the first study assessing the prognostic value of HPV integration in a prospectively annotated CC cohort, which detects a hotspot of HPV integration at MACROD2; involved in impaired PARP1 activity and chromosome instability.

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Conflict of interest statement

C.L.T. has participated in advisory boards of MSD, BMS, Merck Serono, Astra Zeneca, Roche and Nanobiotix, GSK, Celgene, Rakuten. All other authors report no conflict of interest.

Figures

Fig. 1
Fig. 1. Distribution of the HPV integration signatures according to the location of HPV-positive squamous cell carcinomas.
a Cervical cancer; b anal cancer; p < 0.0001. 2J-COL 2 Junctions Colinear, 2J-NL 2 Junctions Non-Linear, MJ-CL Multiple Junctions Clustered, MJ-SC Multiple Junctions Scattered, EPI episomal and 2J 2 Junctions.
Fig. 2
Fig. 2
Distribution of HPV insertion sites in the genome of patients with HPV-positive CC. Each dot represents an HPV integration site.
Fig. 3
Fig. 3
Progression-free survival of the 272 HPV-positive cervical cancer patients according to HPV copy number.

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