* . *
  • About
  • Advertise
  • Privacy & Policy
  • Contact
Sunday, August 24, 2025
Earth-News
  • Home
  • Business
  • Entertainment
    Quotes of the Week: Peacemaker, Project Runway, Countdown and More – yahoo.com

    This Week’s Most Memorable Quotes from Peacemaker, Project Runway, Countdown, and More!

    Drake Appears in Teaser for Bobbi Althoff’s New Podcast ‘Not This Again’ – yahoo.com

    Drake Drops a Surprise Cameo in Bobbi Althoff’s Thrilling New Podcast Teaser ‘Not This Again

    From polka to Poison, Corn Palace adjusts entertainment offerings with the times – Mitchell Republic

    From polka to Poison, Corn Palace adjusts entertainment offerings with the times – Mitchell Republic

    How to watch ‘F1: The Movie’ on Prime Video – About Amazon

    Experience the Thrill: How to Stream ‘F1: The Movie’ on Prime Video

    FOX One is now available on Prime Video: Here’s everything to know – About Amazon

    FOX One is now available on Prime Video: Here’s everything to know – About Amazon

    What Are Our Predictions for Taylor Swift’s ‘Life of a Showgirl’ Based on What She’s Told Us So Far? – yahoo.com

    Uncover the Hidden Surprises in Taylor Swift’s ‘Life of a Showgirl’ – Can You Decode Her Clues?

  • General
  • Health
  • News

    Cracking the Code: Why China’s Economic Challenges Aren’t Shaking Markets, Unlike America’s” – Bloomberg

    Trump’s Narrow Window to Spread the Truth About Harris

    Trump’s Narrow Window to Spread the Truth About Harris

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Trending Tags

    • Trump Inauguration
    • United Stated
    • White House
    • Market Stories
    • Election Results
  • Science
  • Sports
  • Technology
    UNLV Responds to Workforce Need with Microcredential in Nuclear Technology – University of Nevada, Las Vegas | UNLV

    UNLV Unveils Cutting-Edge Microcredential Program to Fuel Growth in Nuclear Technology

    Why Technology Will Never Take Over Completely – Patheos

    Why Technology Will Never Completely Control Our Lives

    Alcorn State awarded grant to boost STEM with VR technology – WJTV

    Alcorn State Secures Grant to Transform STEM Education Through Cutting-Edge VR Technology

    Hyundai: The Only Way To Beat China Is To Embrace Technology – InsideEVs

    Hyundai’s Bold Strategy to Outpace China with Cutting-Edge Technology

    Teaching older adults how to use technology – WWNY

    Empowering Older Adults to Master Technology with Confidence

    Denver man receives pacemaker using new technology – CBS News

    Denver Man’s Life Transformed by Revolutionary Pacemaker Technology

    Trending Tags

    • Nintendo Switch
    • CES 2017
    • Playstation 4 Pro
    • Mark Zuckerberg
No Result
View All Result
  • Home
  • Business
  • Entertainment
    Quotes of the Week: Peacemaker, Project Runway, Countdown and More – yahoo.com

    This Week’s Most Memorable Quotes from Peacemaker, Project Runway, Countdown, and More!

    Drake Appears in Teaser for Bobbi Althoff’s New Podcast ‘Not This Again’ – yahoo.com

    Drake Drops a Surprise Cameo in Bobbi Althoff’s Thrilling New Podcast Teaser ‘Not This Again

    From polka to Poison, Corn Palace adjusts entertainment offerings with the times – Mitchell Republic

    From polka to Poison, Corn Palace adjusts entertainment offerings with the times – Mitchell Republic

    How to watch ‘F1: The Movie’ on Prime Video – About Amazon

    Experience the Thrill: How to Stream ‘F1: The Movie’ on Prime Video

    FOX One is now available on Prime Video: Here’s everything to know – About Amazon

    FOX One is now available on Prime Video: Here’s everything to know – About Amazon

    What Are Our Predictions for Taylor Swift’s ‘Life of a Showgirl’ Based on What She’s Told Us So Far? – yahoo.com

    Uncover the Hidden Surprises in Taylor Swift’s ‘Life of a Showgirl’ – Can You Decode Her Clues?

  • General
  • Health
  • News

    Cracking the Code: Why China’s Economic Challenges Aren’t Shaking Markets, Unlike America’s” – Bloomberg

    Trump’s Narrow Window to Spread the Truth About Harris

    Trump’s Narrow Window to Spread the Truth About Harris

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Trending Tags

    • Trump Inauguration
    • United Stated
    • White House
    • Market Stories
    • Election Results
  • Science
  • Sports
  • Technology
    UNLV Responds to Workforce Need with Microcredential in Nuclear Technology – University of Nevada, Las Vegas | UNLV

    UNLV Unveils Cutting-Edge Microcredential Program to Fuel Growth in Nuclear Technology

    Why Technology Will Never Take Over Completely – Patheos

    Why Technology Will Never Completely Control Our Lives

    Alcorn State awarded grant to boost STEM with VR technology – WJTV

    Alcorn State Secures Grant to Transform STEM Education Through Cutting-Edge VR Technology

    Hyundai: The Only Way To Beat China Is To Embrace Technology – InsideEVs

    Hyundai’s Bold Strategy to Outpace China with Cutting-Edge Technology

    Teaching older adults how to use technology – WWNY

    Empowering Older Adults to Master Technology with Confidence

    Denver man receives pacemaker using new technology – CBS News

    Denver Man’s Life Transformed by Revolutionary Pacemaker Technology

    Trending Tags

    • Nintendo Switch
    • CES 2017
    • Playstation 4 Pro
    • Mark Zuckerberg
No Result
View All Result
Earth-News
No Result
View All Result
Home Health

Tumor mutations may not predict response to immunotherapy, study finds

May 23, 2024
in Health
Tumor mutations may not predict response to immunotherapy, study finds
Share on FacebookShare on Twitter

Tumor mutations may not predict response to immunotherapy

Immune correlates between TMB-high and TMB-low cancers using the earliest cutoff at which ICIs are predictive. PD-L1 positive cell frequency, T-cell inflammatory score, and CD8 + T cell frequency are compared between TMB-high cancers and TMB-low cancers using the earliest cutoff at which ICIs are associated with OS benefit. Credit: Nature Cancer (2024). DOI: 10.1038/s43018-024-00752-x

The number of mutations in the DNA of cancerous tumors may not be an indicator of how well patients will respond to immune checkpoint inhibitors (ICIs), a commonly prescribed type of immunotherapy, a team led by UT Southwestern Medical Center researchers reported in a retrospective study.

The findings, published in Nature Cancer, upend long-held conventional wisdom and could lead to more effective ways of deciding which patients will benefit most from this type of treatment.

“Our study challenges the paradigm that tumor mutational burden is a universal marker of how immunogenic a cancer will be. Current standards that rely on this assumption could lead to both undertreatment and overtreatment of patients,” said study leader David Hsieh, M.D., Assistant Professor of Internal Medicine in the Division of Hematology and Oncology and a member of the Harold C. Simmons Comprehensive Cancer Center at UT Southwestern.

ICIs have revolutionized therapy for several cancer types since the first drug in this category was approved by the U.S. Food and Drug Administration in 2011. Seven other ICIs have since joined the U.S. market. They all work by blocking protein checkpoints that prevent the immune system from attacking cancer cells.

Although ICIs can significantly extend survival, clinical trials have shown that they work in only a fraction of patients, with the number of mutations present in cancer cells thought to be a reliable predictor of ICI success.

For example, pembrolizumab—an ICI commonly prescribed to treat a range of cancers including melanoma, non-small cell lung cancer, and renal cell carcinoma—is approved for patients whose tumors have 10 or more mutations per million base pairs of DNA and whose cancers have progressed on standard treatments.

However, Dr. Hsieh said, the idea that tumor mutation burden (TMB), or the number of mutations present in a tumor, is a consistent marker of how well ICIs will work could be a faulty assumption. The studies forming the basis for this idea were relatively small and included a limited number of cancer types. In addition, he said, the cutoff of 10 or more mutations used to prescribe pembrolizumab was based on weak evidence.

To determine how TMB relates to outcomes with ICI, Dr. Hsieh and his colleagues relied on a database managed by the Caris Precision Oncology Alliance, a group of more than 80 leading cancer centers and academic medical centers, including UT Southwestern. The database includes de-identified genetic information on hundreds of thousands of malignant tumors derived from patients with many different cancer types.

The researchers used this database to analyze TMB in 70,698 tumors of 27 different types of cancer. The data involved 14,736 patients treated with ICIs that target an immune checkpoint protein known as PD-1/L1 and 55,962 who never received an ICI. The researchers then compared TMB with patient outcomes in both groups.

Results showed that TMB predicted ICI benefit in only 12 of the 27 cancer types. Among those 12 cancer types, the TMB thresholds for ICI benefits were far fewer than 10 mutations per million base pairs of DNA and varied widely between cancer types, suggesting that the cutoff for pembrolizumab use was arbitrary.

In some cancer types examined in the study, TMB was associated with improved survival for patients who never received an ICI. In others, survival was worse, suggesting that mutation burden may have independent effects on patients’ prognoses regardless of whether they received immunotherapy.

Since TMB was thought to stimulate immune activity, Dr. Hsieh explained, doctors have often used immune factors—such as whether a tumor had relatively high numbers of infiltrating immune cells or produced more PD-1/L1—as proxies for TMB.

To determine whether these assumptions were accurate, the researchers compared TMB with information in the Caris database from tumor biopsies. While some tumors with high TMBs had features suggesting increased immune activity, others didn’t, suggesting that these features weren’t reliable proxies.

Dr. Hsieh said that these findings showed that TMB is not a reliable indicator of whether ICIs will improve outcome—a potential paradigm shift for the field. More research is necessary, he added, to boost cancer patient outcomes with ICI.

More information:
Maishara Muquith et al, Tissue-specific thresholds of mutation burden associated with anti-PD-1/L1 therapy benefit and prognosis in microsatellite-stable cancers, Nature Cancer (2024). DOI: 10.1038/s43018-024-00752-x

Citation:
Tumor mutations may not predict response to immunotherapy, study finds (2024, May 23)
retrieved 23 May 2024
from https://medicalxpress.com/news/2024-05-tumor-mutations-response-immunotherapy.html

This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no
part may be reproduced without the written permission. The content is provided for information purposes only.

>>> Read full article>>>
Copyright for syndicated content belongs to the linked Source : Medical Xpress – https://medicalxpress.com/news/2024-05-tumor-mutations-response-immunotherapy.html

Tags: healthMutationstumor
Previous Post

Researchers decipher mechanisms of liver regeneration

Next Post

Epigenetic Markers May Predict Kidney Failure Risk in T1D

Julia Schell scores six tries as Canada thrash Fiji in Women’s Rugby World Cup – The Guardian

Julia Schell scores six tries as Canada thrash Fiji in Women’s Rugby World Cup – The Guardian

August 24, 2025
Why Tipping Feels Out of Control in Today’s Economy – MSN

Why Tipping Feels Out of Control in Today’s Economy – MSN

August 24, 2025
Quotes of the Week: Peacemaker, Project Runway, Countdown and More – yahoo.com

This Week’s Most Memorable Quotes from Peacemaker, Project Runway, Countdown, and More!

August 24, 2025
New report demonstrates that corporal punishment harms children’s health – World Health Organization (WHO)

Shocking New Findings Expose the Serious Harm Corporal Punishment Inflicts on Children’s Health

August 24, 2025
Privately influential but publicly absent, Melania Trump is picking and choosing her moments this term – CNN

Melania Trump: Quietly Influential and Selectively Stepping Into the Spotlight This Term

August 24, 2025
Third annual event highlights cultural, ecological importance of Tawas Lake – Iosco County News Herald

Explore the Vibrant Culture and Stunning Ecology of Tawas Lake at This Year’s Exciting Third Annual Event!

August 24, 2025
UNT Ph.D. Grad Gives $2M to Launch Data Science Innovation Lab – Dallas Innovates

UNT Ph.D. Grad Gives $2M to Launch Data Science Innovation Lab – Dallas Innovates

August 24, 2025
Center to advance hunting and conservation looks to tradition, science – NBC Montana

Center Pioneers New Era in Hunting and Conservation by Merging Tradition with Science

August 24, 2025
‘Hidden gem’ – the lifestyle village beating the property slump – Stuff

‘Hidden gem’ – the lifestyle village beating the property slump – Stuff

August 24, 2025
UNLV Responds to Workforce Need with Microcredential in Nuclear Technology – University of Nevada, Las Vegas | UNLV

UNLV Unveils Cutting-Edge Microcredential Program to Fuel Growth in Nuclear Technology

August 24, 2025

Categories

Archives

August 2025
MTWTFSS
 123
45678910
11121314151617
18192021222324
25262728293031
« Jul    
Earth-News.info

The Earth News is an independent English-language daily published Website from all around the World News

Browse by Category

  • Business (20,132)
  • Ecology (787)
  • Economy (808)
  • Entertainment (21,687)
  • General (16,646)
  • Health (9,848)
  • Lifestyle (820)
  • News (22,149)
  • People (809)
  • Politics (817)
  • Science (16,019)
  • Sports (21,306)
  • Technology (15,788)
  • World (789)

Recent News

Julia Schell scores six tries as Canada thrash Fiji in Women’s Rugby World Cup – The Guardian

Julia Schell scores six tries as Canada thrash Fiji in Women’s Rugby World Cup – The Guardian

August 24, 2025
Why Tipping Feels Out of Control in Today’s Economy – MSN

Why Tipping Feels Out of Control in Today’s Economy – MSN

August 24, 2025
  • About
  • Advertise
  • Privacy & Policy
  • Contact

© 2023 earth-news.info

No Result
View All Result

© 2023 earth-news.info

No Result
View All Result

© 2023 earth-news.info

Go to mobile version