CC BY-NC-ND 4.0 · Indian J Med Paediatr Oncol 2021; 42(03): 297-300
DOI: 10.1055/s-0041-1732852
Brief Communication

Potential Prognostic Significance of Patterns of Deletion (13q) in Plasma Cell Myelomas—Reappraisal of a Perennial Bone of Contention

Mohit Kumar Bhardwaj*
1   Department of Pathology and Laboratory Medicine, CORE Diagnostics, Gurgaon, Haryana, India
Sourav Kumar Mishra*
2   Department of Medical Oncology, Advanced Medical Research Institute, Bhubaneswar, Odisha, India
Shivani Sharma
1   Department of Pathology and Laboratory Medicine, CORE Diagnostics, Gurgaon, Haryana, India
Beklashwar Salona
1   Department of Pathology and Laboratory Medicine, CORE Diagnostics, Gurgaon, Haryana, India
Sambit Kumar Mohanty
1   Department of Pathology and Laboratory Medicine, CORE Diagnostics, Gurgaon, Haryana, India
3   Department of Pathology and Laboratory Medicine, Advanced Medical Research Institute, Bhubaneswar, Odisha, India
› Author Affiliations
Disclosure of Funding/Support None.


Deletion 13q is recommended in the initial cytogenetic workup of myeloma patients. The patterns of this abnormality have been shown to have differential prognostic value. The presence of monosomy 13 is associated with a significantly poor progression-free survival, while interstitial deletion 13q is associated with significant improvement in the overall survival. We analyzed the patterns of 13q abnormalities on fluorescent in situ hybridization (FISH) assay results in myeloma patients. Deletion 13q abnormalities were observed in 38% (55 of 138) of the myeloma patients. Ten (18%) and 44 (80%) patients showed interstitial deletion and terminal deletion, respectively. One had a mosaic of both the patterns. Nine of the ten patients with interstitial deletions were males. For terminal deletion 13q, there appeared to be a slight female predilection, with a male to female ratio of 0.83:1. Half of the patients with deletion 13q had coexistent cytogenetic abnormalities. We suggest a baseline FISH for deletion 13q and specification of the type of abnormality (terminal vs. interstitial) in patients with myeloma. Based on our observation in conjunction with the available literature, further studies in a large cohort of patients with survival data are warranted to clearly delineate the role of deletion 13q in myeloma.

* MK and SKM share the first authorship.

Publication History

Article published online:
20 September 2021

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