The Human Androgen Receptor X-chromosome Inactivation Assay for Clonality Diagnostics of Natural Killer Cell Proliferations
Overview
Pathology
Affiliations
Clonality is a frequently exploited characteristic of lymphoid malignancies. However, in the natural killer (NK) cell subset of large granular lymphocyte proliferations, clonality is difficult to prove because of the lack of specific genetic markers, such as immunoglobulin or T-cell receptor gene rearrangements. The human androgen receptor (HUMARA) assay, a polymerase chain reaction-based X-chromosome inactivation assay, is a potential diagnostic tool in these disorders. Although there is much experience with X-chromosome inactivation assays in myeloid proliferations, these assays have found only very limited application in clonality assessment of NK cell proliferations. We applied the HUMARA assay in laboratory diagnostics for detection of clonality in NK cell proliferations. We describe its test performance and report three cases in which clonality of NK cell populations was investigated by use of this assay. Our results demonstrate the usefulness of the HUMARA assay in the diagnostic workup of NK cell proliferations.
Matsumoto A, Kano S, Kobayashi N, Matsuki M, Furukawa R, Yamagishi H Sci Rep. 2024; 14(1):440.
PMID: 38172222 PMC: 10764769. DOI: 10.1038/s41598-023-50668-2.
Werner J, Ballouz S, Hover J, Gillis J Dev Cell. 2022; 57(16):1995-2008.e5.
PMID: 35914524 PMC: 9398941. DOI: 10.1016/j.devcel.2022.07.007.
Morimoto Y, Chonabayashi K, Kawabata H, Okubo C, Yamasaki-Morita M, Nishikawa M Blood Adv. 2021; 6(4):1100-1114.
PMID: 34781359 PMC: 8864662. DOI: 10.1182/bloodadvances.2021005664.
Pastoret C, Desmots F, Drillet G, Le Gallou S, Boulland M, Thannberger A Blood. 2021; 137(23):3237-3250.
PMID: 33512451 PMC: 8351897. DOI: 10.1182/blood.2020006721.
Halbritter F, Farlik M, Schwentner R, Jug G, Fortelny N, Schnoller T Cancer Discov. 2019; 9(10):1406-1421.
PMID: 31345789 PMC: 6795548. DOI: 10.1158/2159-8290.CD-19-0138.