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Updated: Jan 26, 2026

An Integrated Platform for Genome-wide Mapping of Chromatin States Using High-throughput ChIP-sequencing in Tumor Tissues
Published on: April 5, 2018
The Status and Impact of Clinical Tumor Genome Sequencing
Kenna R Mills Shaw1, Anirban Maitra1
1Khalifa Bin Zayed Institute for Personalized Cancer Therapy and Sheikh Ahmed Center for Pancreatic Cancer Research, University of Texas MD Anderson Cancer Center, Houston, Texas 77030, USA;
Abstract:
Since the discovery that DNA alterations initiate tumorigenesis, scientists and clinicians have been exploring ways to counter these changes with targeted therapeutics. The sequencing of tumor DNA was initially limited to highly actionable hot spots-areas of the genome that are frequently altered and have an approved matched therapy in a specific tumor type. Large-scale genome sequencing programs quickly developed technological improvements that enabled the deployment of whole-exome and whole-genome sequencing technologies at scale for pristine sample materials in research environments. However, the turning point for precision medicine in oncology was the innovations in clinical laboratories that improved turnaround time, depth of coverage, and the ability to reliably sequence archived, clinically available samples. Today, tumor genome sequencing no longer suffers from significant technical or financial hurdles, and the next opportunity for improvement lies in the optimal utilization of the technologies and data for many different tumor types.
Insights
Advances in tumor genome sequencing, including whole-exome and whole-genome sequencing, have overcome technical hurdles. The focus now shifts to optimizing the use of this data for precision medicine across diverse cancer types.
Area of Science:
- Oncology
- Genomics
- Precision Medicine
Background:
- DNA alterations are known drivers of tumorigenesis.
- Targeted therapeutics aim to counteract these specific genetic changes.
- Early tumor DNA sequencing focused on actionable hotspots with approved therapies.
Purpose of the Study:
- To review the evolution of tumor genome sequencing technologies.
- To highlight the innovations enabling clinical application of sequencing.
- To identify future opportunities in precision oncology.
Main Methods:
- Review of technological advancements in DNA sequencing.
- Discussion of improvements in clinical laboratory workflows.
- Analysis of the transition from research to clinical settings.
Main Results:
- Technological improvements enabled large-scale whole-exome and whole-genome sequencing.
- Clinical laboratory innovations improved turnaround time and reliability for archived samples.
- Tumor genome sequencing now faces minimal technical or financial barriers.
Conclusions:
- Tumor genome sequencing is now widely accessible.
- The primary challenge is now the optimal utilization of sequencing data.
- Future efforts should focus on leveraging genomic data for broader precision medicine applications.
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