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Related Concept Videos

Cancer02:18

Cancer

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Cancers arise due to mutations in genes involved in the regulation of cell division, which leads to unrestricted cell proliferation. Modern science and medicine have made great strides in the understanding and treatment of cancer, including eradicating cancer in some patients. However, there is still no cure for cancer. This is largely due to the fact that cancer is a large group of many diseases.
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Longitudinal Research02:20

Longitudinal Research

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Sometimes we want to see how people change over time, as in studies of human development and lifespan. When we test the same group of individuals repeatedly over an extended period of time, we are conducting longitudinal research. Longitudinal research is a research design in which data-gathering is administered repeatedly over an extended period of time. For example, we may survey a group of individuals about their dietary habits at age 20, retest them a decade later at age 30, and then again...
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Cancers Originate from Somatic Mutations in a Single Cell02:21

Cancers Originate from Somatic Mutations in a Single Cell

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Cancer arises from mutations in the critical genes that allow healthy cells to escape cell cycle regulation and acquire the ability to proliferate indefinitely. Though originating from a single mutation event in one of the originator cells, cancer progresses when the mutant cell lines continue to gain more and more mutations, and finally, become malignant. For example, chronic myelogenous leukemia (CML) develops initially as a non-lethal increase in white blood cells, which progressively...
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Combination Therapies and Personalized Medicine02:50

Combination Therapies and Personalized Medicine

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Combining two or more treatment methods increases the life span of cancer patients while reducing damage to vital organs or tissue from the overuse of a single treatment. Combination therapy also targets different cancer-inducing pathways, thus reducing the chances of developing resistance to treatment.
The combination of the drug acetazolamide and sulforaphane is a good example of combination therapy to treat cancer. The cells in the interior of a large tumor often die due to the hypoxic and...
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Comparing the Survival Analysis of Two or More Groups01:20

Comparing the Survival Analysis of Two or More Groups

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Survival analysis is a cornerstone of medical research, used to evaluate the time until an event of interest occurs, such as death, disease recurrence, or recovery. Unlike standard statistical methods, survival analysis is particularly adept at handling censored data—instances where the event has not occurred for some participants by the end of the study or remains unobserved. To address these unique challenges, specialized techniques like the Kaplan-Meier estimator, log-rank test, and...
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Cancer Survival Analysis01:21

Cancer Survival Analysis

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Cancer survival analysis focuses on quantifying and interpreting the time from a key starting point, such as diagnosis or the initiation of treatment, to a specific endpoint, such as remission or death. This analysis provides critical insights into treatment effectiveness and factors that influence patient outcomes, helping to shape clinical decisions and guide prognostic evaluations. A cornerstone of oncology research, survival analysis tackles the challenges of skewed, non-normally...
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Related Experiment Video

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Method for Obtaining Primary Ovarian Cancer Cells From Solid Specimens
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Methodologic perspectives on the study of multiple primary cancers.

W D Thompson

    The Yale Journal of Biology and Medicine
    |September 1, 1986
    PubMed
    Summary

    Investigating multiple primary cancers reveals insights into cancer treatment

    Area of Science:

    • Oncology
    • Cancer Etiology
    • Clinical Epidemiology

    Background:

    • Understanding patterns of multiple primary cancers is crucial for evaluating cancer treatment's carcinogenic potential.
    • Associations between different organ cancers may indicate shared risk factors.
    • Studying same-organ multiple primaries explores individual susceptibility and distinct disease subtypes.

    Purpose of the Study:

    • To analyze the etiological significance of multiple primary cancers.
    • To investigate shared risk factors and individual characteristics influencing cancer development.
    • To inform clinical surveillance and preventive strategies for cancer patients.

    Main Methods:

    • Analysis of occurrence patterns of multiple primary cancers (same or different organs).

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  • Comparison of risk factors for first versus second primary tumors.
  • Exploration of etiological hypotheses related to cancer development and progression.

    • Main Results:

    • Strong same-site associations suggest stable individual characteristics contribute to cancer risk.
    • Risk factor comparisons can identify distinct cancer subtypes or enhance detection of etiological exposures.
    • Findings aid in understanding the interplay of genetic predisposition and environmental factors in cancer.

    Conclusions:

    • Multiple primary cancer studies offer valuable data on carcinogenic therapies and shared risk factors.
    • These investigations enhance the understanding of cancer etiology, potentially revealing distinct disease subtypes.
    • Results provide critical information for clinical decision-making regarding cancer surveillance and prevention.