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Updated: Feb 2, 2026

Extraction of Histones from Clinical Specimens for Epigenetic Profiling by Mass Spectrometry
Published on: November 21, 2025
Clinical potential of mass spectrometry-based proteogenomics
Bing Zhang1, Jeffrey R Whiteaker2, Andrew N Hoofnagle3,4
1Department of Molecular and Human Genetics, Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston, TX, USA.
Abstract:
Cancer genomics research aims to advance personalized oncology by finding and targeting specific genetic alterations associated with cancers. In genome-driven oncology, treatments are selected for individual patients on the basis of the findings of tumour genome sequencing. This personalized approach has prolonged the survival of subsets of patients with cancer. However, many patients do not respond to the predicted therapies based on the genomic profiles of their tumours. Furthermore, studies pairing genomic and proteomic analyses of samples from the same tumours have shown that the proteome contains novel information that cannot be discerned through genomic analysis alone. This observation has led to the concept of proteogenomics, in which both types of data are leveraged for a more complete view of tumour biology that might enable patients to be more successfully matched to effective treatments than they would using genomics alone. In this Perspective, we discuss the added value of proteogenomics over the current genome-driven approach to the clinical characterization of cancers and summarize current efforts to incorporate targeted proteomic measurements based on selected/multiple reaction monitoring (SRM/MRM) mass spectrometry into the clinical laboratory to facilitate clinical proteogenomics.
Insights
Proteogenomics, combining genomic and proteomic data, offers a more complete view of tumor biology than genomics alone. This approach aims to improve patient-treatment matching for better cancer therapy outcomes.
Area of Science:
- Oncology
- Proteomics
- Genomics
Background:
- Personalized oncology relies on targeting specific genetic alterations in cancer.
- Genome-driven treatments improve survival for some patients, but many do not respond.
- Genomic analysis alone may miss crucial tumor information present in the proteome.
Purpose of the Study:
- To discuss the added value of proteogenomics over genome-driven approaches in cancer characterization.
- To summarize efforts in integrating targeted proteomic measurements into clinical settings.
- To enable more successful patient-treatment matching through a comprehensive view of tumor biology.
Main Methods:
- Leveraging both genomic and proteomic data for a complete view of tumor biology.
- Utilizing selected/multiple reaction monitoring (SRM/MRM) mass spectrometry for targeted proteomic measurements.
- Incorporating proteomic data into clinical laboratories for clinical proteogenomics.
Main Results:
- Proteogenomics provides novel information beyond genomic analysis.
- Combining proteomic and genomic data offers a more complete understanding of tumor biology.
- This integrated approach has the potential to improve treatment selection for cancer patients.
Conclusions:
- Proteogenomics enhances cancer characterization by integrating proteomic and genomic insights.
- Targeted proteomic measurements are being incorporated into clinical labs to facilitate clinical proteogenomics.
- This approach promises to improve the efficacy of personalized oncology by better matching patients to treatments.
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