Bending the Curve
How medicine got from “there is no treatment” to today’s standard of care, one trial at a time.
Dashed line: a schematic of how each new kind of treatment lifted the curve; it is not data. Solid line: 5-year relative survival, all cancers combined, by year of diagnosis, United States (SEER 8 registry areas) (People diagnosed with cancer of any site as defined by SEER Cancer Stat Facts, all races and both sexes, in the eight SEER 8 registry areas (Atlanta, Connecticut, Hawaii, Iowa, New Mexico, San Francisco-Oakland, Seattle-Puget Sound, Utah). Observed values by year of diagnosis, 1975 to 2018. The source page does not state the age range.). Relative survival estimates the share of people expected to survive the effects of their cancer, excluding the risk of dying from other causes. The eight registry areas do not cover the whole United States. The mix of cancers diagnosed may have changed over time, and earlier detection can raise measured survival through lead-time bias and overdiagnosis without changing how long people live. The curve shows what happened, not why. Values are the observed (not modeled) figures for each year of diagnosis. Needs review: the landmarks and figures here are not yet fully confirmed. Source
1600 BCE
Oldest cited description of cancer
The Edwin Smith papyrus, dated to about 1600 BCE, is cited as holding the oldest known description of cancer.
Source400 BCE
Hippocratic terms for cancer
The word cancer is credited to Hippocratic physicians, who used karkinos for non-healing swellings and ulcers. Date approximate.
Source1775
An occupational link is described
Percivall Pott described scrotal cancer in chimney sweeps, the first cancer linked to an occupational exposure.
Source1846
Ether anaesthesia enters surgery
After the first public ether demonstration at Massachusetts General Hospital on 16 October 1846, surgical volume there rose.
Source1894
Radical mastectomy is described
Halsted's 1894 report of breast cancer operations at Johns Hopkins described what became known as radical mastectomy.
Source1896
X-ray treatment of cancer: disputed origins
Reports date X-ray treatment of cancer to 1896; priority is disputed, and one analysis favours Despeignes of Lyon (July 1896).
Source1941
Hormonal manipulation in prostate cancer
In 1941 Huggins and Hodges studied castration, estrogen and androgen injection and serum phosphatases in metastatic prostate cancer.
Source1948
Temporary remissions in childhood leukemia
Farber and colleagues described temporary remissions in children with acute leukemia given a folic acid antagonist (aminopterin).
Source1963
A randomized screening trial begins
The HIP trial in New York began in December 1963, randomly assigning women aged 40 to 64 to a screening or a control group.
Source2001
A kinase inhibitor in chronic myeloid leukemia
In a phase 1 trial after interferon alfa had failed, the BCR-ABL inhibitor STI571 (imatinib) produced complete hematologic responses.
Source2010
Anti-CTLA-4 antibody improves survival
In a phase 3 trial in previously treated metastatic melanoma, ipilimumab improved overall survival compared with a gp100 vaccine alone.
Source2014
Engineered T cells for leukemia
In pilot trials, CD19-directed CAR T cells produced complete remission in 27 of 30 children and adults with relapsed or refractory ALL.
Source
In the eight SEER registry areas of the United States, 5-year relative survival for all cancers combined rose from 49.85% for people diagnosed in 1975 to 73.58% for those diagnosed in 2018.
National Cancer Institute, Surveillance, Epidemiology, and End Results (SEER) Program. SEER Cancer Stat Facts: Cancer of Any Site. Bethesda, MD: National Cancer Institute; 2026. https://seer.cancer.gov/statfacts/html/all.html Source
Choose a cancer
Explore across cancers
- FoundationsThe cross-cancer discoveries everything else rests on.
- ErasWhen each kind of treatment first changed practice, cancer by cancer.
- Trial explorerEvery trial, searchable by cancer, treatment, setting and endpoint.
- PioneersThe people behind the milestones.
- How to read the evidenceKaplan–Meier curves, hazard ratios, endpoints and trial design, interactively.