What does this research mean for the field?

Chromosomal microarray analysis remains essential in routine diagnostic workflows for hematologic malignancies because optical genome mapping currently lacks the sensitivity to detect clinically relevant copy-neutral loss of heterozygosity events smaller than 25 Mb. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

This study aims to assess the necessity of chromosomal microarray analysis (CMA) for detecting copy-neutral events in cancer diagnostics when comparing it to optical genome mapping (OGM).

June 6, 2026CancersOpen Access

SNP-Based Chromosomal Microarray Analysis in the Era of Optical Genome Mapping: An Enriched Case-Series Evaluating Copy-Neutral Events

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Authors

AMAlexander Marr PGPatrick R. Gonzales SGShivani Golem

Discussion

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Overview

Retrospective analysis evaluates copy-neutral events in malignancies, suggesting CMA is crucial despite OGM advancements.

Key Points

This study aims to assess the necessity of chromosomal microarray analysis (CMA) for detecting copy-neutral events in cancer diagnostics when comparing it to optical genome mapping (OGM).
Retrospective review of 53 primary neoplastic cases identified with CN-LOH via CMA from a cohort of 327 hematologic specimens.
Assessment of event size, genomic content, and correlation with next-generation sequencing findings was conducted.
Analysis of newly diagnosed B-cell acute lymphoblastic leukemia (B-ALL) for CN-LOH frequency.
Nearly 50% of CN-LOH events were detected below the OGM detection threshold of 25 Mb, including clinically significant genes such as FLT3 and TP53.
Two-thirds of cases with CN-LOH contained pathogenic variants identified by NGS.
CN-LOH was infrequent in B-ALL, and most alterations were detectable by OGM, highlighting CMA's ongoing relevance in certain contexts.

Cite This Study

Marr et al. (2026) studied this question.

synapsesocial.com/papers/6a23bb9a71a5da9775e770c0 https://doi.org/10.3390/cancers18111841

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June 6, 2026CancersOpen Access

SNP-Based Chromosomal Microarray Analysis in the Era of Optical Genome Mapping: An Enriched Case-Series Evaluating Copy-Neutral Events

View Full Paper

Ask AI

Bookmark

Authors

AMAlexander Marr PGPatrick R. Gonzales SGShivani Golem

Discussion

Member takes

Overview

Retrospective analysis evaluates copy-neutral events in malignancies, suggesting CMA is crucial despite OGM advancements.

Key Points

This study aims to assess the necessity of chromosomal microarray analysis (CMA) for detecting copy-neutral events in cancer diagnostics when comparing it to optical genome mapping (OGM).
Retrospective review of 53 primary neoplastic cases identified with CN-LOH via CMA from a cohort of 327 hematologic specimens.
Assessment of event size, genomic content, and correlation with next-generation sequencing findings was conducted.
Analysis of newly diagnosed B-cell acute lymphoblastic leukemia (B-ALL) for CN-LOH frequency.
Nearly 50% of CN-LOH events were detected below the OGM detection threshold of 25 Mb, including clinically significant genes such as FLT3 and TP53.
Two-thirds of cases with CN-LOH contained pathogenic variants identified by NGS.
CN-LOH was infrequent in B-ALL, and most alterations were detectable by OGM, highlighting CMA's ongoing relevance in certain contexts.

Cite This Study

Marr et al. (2026) studied this question.

synapsesocial.com/papers/6a23bb9a71a5da9775e770c0 https://doi.org/10.3390/cancers18111841

Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

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