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Science · North America

Kimmie Ng’s atlas maps 189 colorectal tumors across ages

Kimmie Ng and her colleagues published a single-cell atlas covering 189 colorectal tumors from patients in their 20s through their 90s. Ng said survival for patients under 35 may be worse than for patients in their 40s or 60s, even with more aggressive treatment and better baseline health.

AI-assisted synthesis · Based on 2 outlets' reporting · Article text read from 1 of 2 outletsHow it's made

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What happened

Key facts

  • Kimmie Ng is a colorectal cancer researcher and director of the Dana-Farber Cancer Institute Young-Onset Colorectal Cancer Center (per STAT).
  • Ng said younger patients are often diagnosed at later stages and with tumors that have more aggressive features (per STAT).
  • The atlas and the technology used to create it may help researchers account for variables that complicated earlier studies (per STAT).

The brief

Kimmie Ng and her colleagues published an atlas mapping 189 colorectal tumors from patients in their 20s through their 90s, in a study that may help illuminate differences between younger and older colorectal cancer patients. STAT reported that the research appeared in Nature Medicine.

Ng is a colorectal cancer researcher and directs the Dana-Farber Cancer Institute Young-Onset Colorectal Cancer Center. The work addresses early-onset colorectal cancer, which STAT describes as typically affecting patients under 50. Ng said younger patients are often diagnosed at later stages and with tumors showing more aggressive features.

Those observations describe patterns Ng cited; the account does not provide a breakdown of the tumors by age group or stage. Ng also said survival for patients under 35 may be worse than for patients in their 40s or 60s, even though the younger patients receive more aggressive treatment and have better baseline health.

Her comparison is qualified: she said survival “may actually not be as good,” rather than presenting a quantified survival analysis in the account. Ng said researchers had believed tumors could differ biologically between younger and older patients. The new study is presented as a way to investigate those differences using a broad age range of tumors.

Nature’s headline separately identifies its coverage as an atlas using single-nucleus RNA sequencing across the age continuum. STAT reported that both the atlas and the technology used to produce it may help researchers account for variables that complicated earlier studies.

The account does not specify which variables affected prior research or describe how the atlas resolves them. The study’s stated focus is biological comparison across age groups, alongside the clinical patterns Ng described for younger patients.

The reported findings underscore the question the atlas is intended to help examine: how colorectal tumors in younger patients compare with those in older patients.

Why it matters

  • Ng said younger patients are often diagnosed at later stages and with tumors that have more aggressive features.
  • The comparison Ng described puts survival for patients under 35 alongside patients in their 40s or 60s, despite more aggressive treatment and better baseline health.
  • The atlas covers 189 tumors from patients in their 20s through their 90s, enabling the study to examine tumors across that age range.

What to watch next

  • Whether further findings from Ng's study clarify biological differences between younger and older patients.
  • Whether the atlas and its technology help researchers account for variables that complicated earlier studies.
  • Whether future reporting provides more detail about the tumor features and age groups represented in the 189-tumor atlas.

How it's being covered

Coverage analysisShow details
2 source articles · 2 unique outlets
Outlet political mix: Too few rated· 2 Center
Where the outlets are based: Europe 50% · Unknown 50%
Outlet political mix
Too few rated
Left
Center
Right
0 outlets
2 outlets
0 outlets
The marker shows coverage balance: each unique outlet counts once.
Geography
Where the outlets covering this story are based.
2 unique outletsDominant coverage: Europe
Limited coverage
  • Coverage is currently limited to 2 outlets.
How we measure coverage

How outlets' accounts compare

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Timeline

Developments from this story's sources, dated background we compiled and fact-checked, and our earlier coverage. Each row says which.
  1. In 2009, researchers including Stephen Quake and Rong Fan published a method for sequencing RNA from individual cells, helping establish a technique later adapted to studies of cancer.
    Background · from our historical context
  2. In 2016, the Human Cell Atlas initiative set out to map cell types across human tissues, providing a broader scientific framework for cell-by-cell analysis.
    Background · from our historical context
  3. An American Cancer Society study reported rising colorectal cancer incidence among U.S. adults younger than 50.
    Background · compiled and fact-checked by Updat3
  4. In May 2021, the U.S. Preventive Services Task Force lowered the recommended starting age for average-risk colorectal cancer screening from 50 to 45, citing rising diagnoses among younger adults.
    Background · from our historical context

How we got here

In May 2021, the U.S. Preventive Services Task Force lowered the recommended starting age for average-risk colorectal cancer screening from 50 to 45, citing rising diagnoses among younger adults.

The change followed evidence including a 2019 American Cancer Society study that found colorectal cancer incidence increasing among U.S. adults younger than 50, even as it fell among older adults.

Original sources

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