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The "war on cancer" is the effort to find a cure for
cancer Cancer is a group of diseases involving abnormal cell growth with the potential to invade or spread to other parts of the body. These contrast with benign tumors, which do not spread. Possible signs and symptoms include a lump, abnormal b ...
by increased
research Research is " creative and systematic work undertaken to increase the stock of knowledge". It involves the collection, organization and analysis of evidence to increase understanding of a topic, characterized by a particular attentiveness ...
to improve the understanding of cancer biology and the development of more effective
cancer treatments Cancer can be treated by surgery, chemotherapy, radiation therapy, hormonal therapy, targeted therapy (including immunotherapy such as monoclonal antibody therapy) and synthetic lethality, most commonly as a series of separate treatments (e.g ...
, such as targeted drug therapies. The aim of such efforts is to eradicate cancer as a major
cause of death In law, medicine, and statistics, cause of death is an official determination of conditions resulting in a human's death, which may be recorded on a death certificate. A cause of death is determined by a medical examiner. The cause of death is ...
. The signing of the National Cancer Act of 1971 by
United States president The president of the United States (POTUS) is the head of state and head of government of the United States of America. The president directs the executive branch of the federal government and is the commander-in-chief of the United Stat ...
Richard Nixon Richard Milhous Nixon (January 9, 1913April 22, 1994) was the 37th president of the United States, serving from 1969 to 1974. A member of the Republican Party, he previously served as a representative and senator from California and was ...
is generally viewed as the beginning of this effort, though it was not described as a "war" in the legislation itself. Despite significant progress in the treatment of certain forms of cancer (such as childhood leukemia), cancer in general remains a major cause of death half a century after this war on cancer began, leading to a perceived lack of progress and to new legislation aimed at augmenting the original National Cancer Act of 1971. New research directions, in part based on the results of the Human Genome Project, hold promise for a better understanding of the genetic factors underlying cancer, and the development of new diagnostics, therapies, preventive measures, and early detection ability. However, targeting cancer proteins can be difficult, as a protein can be undruggable.


History


National Cancer Act of 1971

The war on cancer began with the National Cancer Act of 1971, a
United States federal law The law of the United States comprises many levels of codified and uncodified forms of law, of which the most important is the nation's Constitution, which prescribes the foundation of the federal government of the United States, as well as ...
. The act was intended "to amend the Public Health Service Act so as to strengthen the
National Cancer Institute The National Cancer Institute (NCI) coordinates the United States National Cancer Program and is part of the National Institutes of Health (NIH), which is one of eleven agencies that are part of the U.S. Department of Health and Human Services. ...
in order to more effectively carry out the national effort against
cancer Cancer is a group of diseases involving abnormal cell growth with the potential to invade or spread to other parts of the body. These contrast with benign tumors, which do not spread. Possible signs and symptoms include a lump, abnormal b ...
". It was signed into law by President Nixon on December 23, 1971. Health activist and philanthropist
Mary Lasker Mary Woodard Lasker (November 30, 1900February 21, 1994) was an American health activist and philanthropist. She worked to raise funds for medical research and founded the Lasker Foundation. Early life Mary Woodard was born in Watertown, Wisconsi ...
was instrumental in persuading the
United States Congress The United States Congress is the legislature of the federal government of the United States. It is bicameral, composed of a lower body, the House of Representatives, and an upper body, the Senate. It meets in the U.S. Capitol in Washing ...
to pass the National Cancer Act. She and her husband
Albert Lasker Albert Davis Lasker (May 1, 1880 – May 30, 1952) was an American businessman who played a major role in shaping modern advertising. He was raised in Galveston, Texas, where his father was the president of several banks. Moving to Chicago, he be ...
were strong supporters of medical research. They established the Lasker Foundation which awarded people for their research. In the year of 1943, Mary Lasker began changing the American Cancer Society to get more funding for research. Five years later she contributed to getting federal funding for the National Cancer Institute and the National Heart Institute. In 1946 the funding was around $2.8 million and had grown to over $1.4 billion by 1972. In addition to all of these accomplishments, Mary became the president of the Lasker Foundation due to the death of her husband in 1952. Lasker's devotion to medical research and experience in the field eventually contributed to the passing of the National Cancer Act. The improved funding for cancer research has been quite beneficial over the last 40 years. In 1971, the number of survivors in the U.S. was 3 million and as of 2007 has increased to more than 12 million.


NCI Director's Challenge

In 2003,
Andrew von Eschenbach Andrew C. von Eschenbach (born October 30, 1941) was the Commissioner of the United States Food and Drug Administration from 2006 to 2009. He became acting Commissioner on September 26, 2005, after the resignation of his predecessor Lester Crawfo ...
, the director of the
National Cancer Institute The National Cancer Institute (NCI) coordinates the United States National Cancer Program and is part of the National Institutes of Health (NIH), which is one of eleven agencies that are part of the U.S. Department of Health and Human Services. ...
(who served as FDA Commissioner from 2006 to 2009 and is now a Director at biotechnology company
BioTime Lineage Cell Therapeutics, Inc. is a clinical-stage biotechnology company developing novel cell therapies for unmet medical needs. Lineage’s programs are based on its robust proprietary cell-based therapy platform and associated in-house devel ...
) issued a challenge "to eliminate the suffering and death from cancer, and to do so by 2015". This was supported by the American Association for Cancer Research in 2005 though some scientists felt this goal was impossible to reach and undermined von Eschenbach's credibility. John E. Niederhuber, who succeeded Andrew von Eschenbach as NCI director, noted that cancer is a global health crisis, with 12.9 million new cases diagnosed in 2009 worldwide and that by 2030, this number could rise to 27 million including 17 million deaths "unless we take more pressing action".
Harold Varmus Harold Eliot Varmus (born December 18, 1939) is an American Nobel Prize-winning scientist. He is currently the Lewis Thomas University Professor of Medicine at Weill Cornell Medicine and a senior associate at the New York Genome Center. He was ...
, former director of the
NIH The National Institutes of Health, commonly referred to as NIH (with each letter pronounced individually), is the primary agency of the United States government responsible for biomedical and public health research. It was founded in the late ...
and director of the NCI from 2010 to 2015, held a town hall meeting in 2010 in which he outlined his priorities for improving the cancer research program, including the following: # reforming the clinical trials system, # improving utilization of the NIH clinical center ( Mark O. Hatfield Clinical Research Center), # readjusting the drug approval and regulation processes, # improving cancer treatment and prevention, and # formulating new, more specific and science-based questions.


Renewed focus on cancer

Recent years have seen an increased perception of a lack of progress in the war on cancer, and renewed motivation to confront the disease. On July 15, 2008, the
United States Senate Committee on Health, Education, Labor, and Pensions The United States Senate Committee on Health, Education, Labor and Pensions (HELP) generally considers matters relating to these issues. Its jurisdiction also extends beyond these issues to include several more specific areas, as defined by Sen ...
convened a panel discussion titled, ''Cancer: Challenges and Opportunities in the 21st Century''. It included interviews with noted
cancer survivor A cancer survivor is a person with cancer of any type who is still living. Whether a person becomes a survivor at the time of diagnosis or after completing treatment, whether people who are actively dying are considered survivors, and whether ...
s such as
Arlen Specter Arlen Specter (February 12, 1930 – October 14, 2012) was an American lawyer, author and politician who served as a United States Senator from Pennsylvania from 1981 to 2011. Specter was a Democrat from 1951 to 1965, then a Republican fr ...
,
Elizabeth Edwards Mary Elizabeth Anania Edwards (July 3, 1949 – December 7, 2010) was an American attorney, author, and health care activist. She was married to John Edwards, the former U.S. Senator from North Carolina who was the 2004 United States Democrati ...
and
Lance Armstrong Lance Edward Armstrong ('' né'' Gunderson; born September 18, 1971) is an American former professional road racing cyclist. Regarded as a sports icon for winning the Tour de France seven consecutive times from 1999 to 2005 after recovering fr ...
, who came out of retirement in 2008, returning to competitive cycling "to raise awareness of the global cancer burden".


Livestrong Foundation

The
Livestrong Foundation The Livestrong Foundation is a United States nonprofit organization that provides support for people affected by cancer. The foundation, based in Austin, Texas, was established in 1997 by cancer survivor and former professional road racing cycl ...
created the Livestrong Global Cancer Campaign to address the burden of cancer worldwide and encourage nations to make commitments to battle the disease and provide better access to care. In April 2009, the foundation announced that the Hashemite Kingdom of Jordan pledged $300 million to fund three important cancer control initiatives – building a cutting-edge cancer treatment and research facility, developing a national cancer control plan and creating an Office of Advocacy and Survivorship. The Livestrong Foundation encourages similar commitments from other nations to combat the disease. Livestrong Day is an annual event established by the LAF to serve as "a global day of action to raise awareness about the fight against cancer". Individuals from around the world are encouraged to host cancer-oriented events in their local communities and then register their events with the Livestrong website.


21st Century Cancer Access to Life-Saving Early detection, Research and Treatment (ALERT) Act

The
US Senate The United States Senate is the upper chamber of the United States Congress, with the House of Representatives being the lower chamber. Together they compose the national bicameral legislature of the United States. The composition and po ...
on 26 March 2009 issued a new bill (S. 717), the 21st Century Cancer Access to Life-Saving Early detection, Research and Treatment (ALERT) Act intended to "overhaul the 1971 National Cancer Act." The bill aims to improve patient access to
prevention Prevention may refer to: Health and medicine * Preventive healthcare, measures to prevent diseases or injuries rather than curing them or treating their symptoms General safety * Crime prevention, the attempt to reduce deter crime and crim ...
and early detection by: # providing funding for research in early detection, # supplying grants for screening and referrals for treatment, and # increasing access to clinical trials and information.


Obama-Biden Plan to Combat Cancer

During their 2008 U.S. presidential campaign then Senators
Barack Obama Barack Hussein Obama II ( ; born August 4, 1961) is an American politician who served as the 44th president of the United States from 2009 to 2017. A member of the Democratic Party, Obama was the first African-American president of the ...
and Joe Biden published a plan to combat cancer that entailed doubling "federal funding for cancer research within 5 years, focusing on
NIH The National Institutes of Health, commonly referred to as NIH (with each letter pronounced individually), is the primary agency of the United States government responsible for biomedical and public health research. It was founded in the late ...
and NCI" as well as working "with Congress to increase funding for the
Food and Drug Administration The United States Food and Drug Administration (FDA or US FDA) is a List of United States federal agencies, federal agency of the United States Department of Health and Human Services, Department of Health and Human Services. The FDA is respon ...
." Their plan would provide additional funding for: * research on rare cancers and those without effective treatment options, * the study of health disparities and evaluation of possible interventions, * and efforts to better understand genetic factors that can impact cancer onset and outcomes. President Obama's 2009 economic stimulus package includes $10 billion for the
NIH The National Institutes of Health, commonly referred to as NIH (with each letter pronounced individually), is the primary agency of the United States government responsible for biomedical and public health research. It was founded in the late ...
, which funds much of the
cancer research Cancer research is research into cancer to identify causes and develop strategies for prevention, diagnosis, treatment, and cure. Cancer research ranges from epidemiology, molecular bioscience to the performance of clinical trials to evaluate and ...
in the U.S., and he has pledged to increase federal funding for cancer research by a third for the next two years as part of a drive to find "a cure for cancer in our time". In a message published in the July 2009 issue of Harper's Bazaar, President Obama described his mother's battle with
ovarian cancer Ovarian cancer is a cancerous tumor of an ovary. It may originate from the ovary itself or more commonly from communicating nearby structures such as fallopian tubes or the inner lining of the abdomen. The ovary is made up of three different c ...
and, noting the additional funding his administration has slated for cancer research, stated: "Now is the time to commit ourselves to waging a war against cancer as aggressive as the war cancer wages against us." On 30 September 2009, Obama announced that $1 billion of a $5 billion medical research spending plan would be earmarked for research into the genetic causes of cancer and targeted cancer treatments. Cancer-related federal spending of money from the 2009 Recovery Act can be tracked online.


World Cancer Campaign

The International Union Against Cancer (UICC) has organized a World Cancer campaign in 2009 with the theme, "I love my healthy active childhood," to promote healthy habits in children and thereby reduce their lifestyle-based cancer risk as adults. The
World Health Organization The World Health Organization (WHO) is a specialized agency of the United Nations responsible for international public health. The WHO Constitution states its main objective as "the attainment by all peoples of the highest possible level of ...
is also promoting this campaign and joins with the UICC in annually promoting World Cancer Day on 4 February.


United States' 2022 Moonshot 2.0

Joe Biden announced Moonshot 2.0, a new front in the war on cancer on the 4th of February 2022 as part of World Cancer Day. As part of the Moonshot 2.0, Biden-Harris Administration sets the ambitious goal of reducing cancer death rate by at least 50 Percent Over the next 25 Years, and improving the experience of living with and surviving Cancer. The new effort will signal a "reignition" of the "cancer moonshot" Biden began as vice president under Barack Obama. Moonshot 2.0 was reported to be deeply imbued with personal grief, since the president's son Beau had died the year before from brain cancer. Biden's new plan calls for a "cancer Cabinet", as well as a new federal agency for high-level research for which his administration is seeking $6.5 billion in seed funding. The president named Danielle Carnival, a neuroscientist who worked on the 2016 cancer initiative, to oversee the moonshot's second version. Moonshot 2.0 would continue work from 2016, involving fostering public-private partnerships, including with biomedical giants, community organizations and academic institutions. The administration noted that the pandemic showed that researchers collaborating across countries and regulatory barriers could work to produce vaccines whose safety and efficacy are widely regarded as "a marvel of science". On the same day that Moonshot 2.0 was launched, the United Kingdom, a key ally and important research partner, launched their 2022 National War on Cance

Specifically, the White House announced new goals outlining: * Working together over the next 25 years, to will cut today's age-adjusted death rate from cancer by at least 50 percent. * To improve the experience of people and their families living with and surviving cancer. The Moonshot 2.0 statement detailed actions that the White House stated would drive us toward ending cancer as we know it today * To diagnose cancer sooner. Noting "we can also greatly expand the cancers we can screen for. Five years ago, detecting many cancers at once through blood tests was a dream. Now new technologies and rigorous clinical trials could put this within our reach" * To prevent cancer * To address inequities. Noting a plan to ensure that every community in America – rural, urban, Tribal, and everywhere else – has access to cutting-edge cancer diagnostics, therapeutics, and clinical trials. * To target the right treatments to the right patients * To speed progress against the most deadly and rare cancers, including childhood cancers * To support patients, caregivers, and survivors * To learn from all patients * Re-establish White House Leadership with a White House Cancer Moonshot coordinator in the Executive Office of the President, to demonstrate the President and First Lady's personal commitment to making progress and to leverage the whole-of-government approach and national response that the challenge of cancer demands. And additionally form a Cancer Cabinet, and host a White House Cancer Moonshot Summit. * Issue a Call to Action on Cancer Screening and Early Detection.


United Kingdom's 2022 National War on Cancer

The United Kingdom initiated a 10-year National war on cancer on World Cancer Day on the 4th of February 2022. This was on the same day as United States' 2022 Moonshot 2.0 initiative calling for increasing collaboration for a new front in the war on cancer across countries. It was launched by the Health and Social Care Secretary
Sajid Javid Sajid Javid (; born 5 December 1969) is a British politician who served as Secretary of State for Health and Social Care from June 2021 to July 2022, having previously served as Home Secretary from 2018 to 2019 and Chancellor of the Exchequer ...
at the Francis Crick institute in London. Started in the shadow of the third coronavirus wave in the United Kingdom, Sajid Javid promised the National War on Cancer will "make the UK's cancer care system "the best in Europe"", and "show how we are learning the lessons from the pandemic, and apply them to improving cancer services over the next decade". A set of six new and strengthened priorities were made public including:- * Increasing the number of people diagnosed at an early stage where treatment can prove much more effective * Intensifying research on new early diagnostic tools to catch cancer at an earlier stage. A key strategy of the National War on Cancer was building on the latest scientific advances and partnering with the country's technology pioneers. The United Kingdom's NHS-Galleri trial is evaluating a new test that looks for distinct markers in blood to identify cancer risk and was listed as a key example of how technology can transform the way cancer is detected. The test is being trialled across England, with thousands of people already recruited. The UK government wants similar technologies to help form new partnerships and give their
National Health Service The National Health Service (NHS) is the umbrella term for the publicly funded healthcare systems of the United Kingdom (UK). Since 1948, they have been funded out of general taxation. There are three systems which are referred to using the " ...
early, cost effective access to new diagnostics. * Intensifying research on mRNA vaccines and therapeutics for cancer – this will be achieved through the UK's global leadership and supporting industry to develop new cancer treatments by combining expertise in cancer immunotherapy treatment and the vaccine capabilities developed throughout the pandemic * Improving prevention of cancer through tackling the big known risk factors such as smoking * Boosting the cancer workforce * Tackling disparities and inequalities, including in cancer diagnosis times and ensuring recovery from the pandemic is delivered in a fair way – for instance, the "Help Us Help You" cancer awareness campaign will be directed towards people from more deprived groups and ethnic minorities


Progress

Though there has been significant progress in the understanding of cancer biology, risk factors, treatments, and prognosis of some types of cancer (such as childhood leukemia) since the inception of the National Cancer Act of 1971, progress in reducing the overall cancer
mortality rate Mortality rate, or death rate, is a measure of the number of deaths (in general, or due to a specific cause) in a particular population, scaled to the size of that population, per unit of time. Mortality rate is typically expressed in units of d ...
has been disappointing. Many types of cancer remain largely incurable (such as pancreatic cancer) and the overall death rate from cancer has not decreased appreciably since the 1970s. The death rate for cancer in the U.S., adjusted for population size and age, dropped only 5 percent from 1950 to 2005. As of 2012, WHO reported 8.2 million annual deaths from cancer Heart disease (including both Ischaemic and hypertensive) accounted for 8.5 million annual deaths. Stroke accounted for 6.7 million annual deaths. There is evidence for progress in reducing cancer mortality. Age-specific analysis of cancer mortality rates has had progress in reducing cancer mortality in the United States since 1955. An August 2009 study found that age-specific cancer mortality rates have been steadily declining since the early 1950s for individuals born since 1925, with the youngest age groups experiencing the steepest decline in mortality rate at 25.9 percent per decade, and the oldest age groups experiencing a 6.8 percent per decade decline. Dr. Eric Kort, the lead author of this study, claims that public reports often focus on cancer incidence rates and underappreciate the progress that has been achieved in reduced cancer mortality rates. The effectiveness and expansion of available therapies has seen significant improvements since the 1970s. For example,
lumpectomy Lumpectomy (sometimes known as a tylectomy, partial mastectomy, breast segmental resection or breast wide local excision) is a surgical removal of a discrete portion or "lump" of breast tissue, usually in the treatment of a malignant tumor or brea ...
replaced more invasive
mastectomy Mastectomy is the medical term for the surgical removal of one or both breasts, partially or completely. A mastectomy is usually carried out to treat breast cancer. In some cases, women believed to be at high risk of breast cancer have the operat ...
surgery for the treatment of
breast cancer Breast cancer is cancer that develops from breast tissue. Signs of breast cancer may include a lump in the breast, a change in breast shape, dimpling of the skin, milk rejection, fluid coming from the nipple, a newly inverted nipple, or a r ...
. Treatment of childhood leukemia and
chronic myeloid leukemia Chronic myelogenous leukemia (CML), also known as chronic myeloid leukemia, is a cancer of the white blood cells. It is a form of leukemia characterized by the increased and unregulated growth of myeloid cells in the bone marrow and the accumulati ...
(CML) have undergone major advances since the war on cancer began. The drug Gleevec now cures most CML patients, compared to previous therapy with interferon, which extended life for approximately 1 year in only 20-30 percent of patients. Dr. Steven Rosenberg, chief of surgery at the NCI has said that as of the year 2000, 50% of all diagnosed cases of cancer are curable through a combination of surgery, radiation, and
chemotherapy Chemotherapy (often abbreviated to chemo and sometimes CTX or CTx) is a type of cancer treatment that uses one or more anti-cancer drugs ( chemotherapeutic agents or alkylating agents) as part of a standardized chemotherapy regimen. Chemothe ...
. Cancer surveillance experts have reported a 15.8 percent decrease in the age-standardized death rate from all cancers combined between 1991 and 2006 along with an approximately 1 percent annual decrease in the rate of new diagnoses between 1999 and 2006. A large portion of this decreased mortality for men was attributable to
smoking cessation Smoking cessation, usually called quitting smoking or stopping smoking, is the process of discontinuing tobacco smoking. Tobacco smoke contains nicotine, which is addictive and can cause dependence. As a result, nicotine withdrawal often m ...
efforts in the United States. A 2010 report from the American Cancer Society found that death rates for all cancers combined decreased 1.3% per year from 2001 to 2006 in males and 0.5% per year from 1998 to 2006 in females, largely due to decreases in the 3 major cancer sites in men (lung, prostate, and colorectum) and 2 major cancer sites in women (breast and colorectum). Cancer death rates between 1990 and 2006 for all races combined decreased by 21.0% among men and by 12.3% among women. This reduction in the overall cancer death rates translates to the avoidance of approximately 767,000 deaths from cancer over the 16-year period. Despite these reductions, the report noted, cancer still accounts for more deaths than heart disease in persons younger than 85 years. An improvement in the number of cancer survivors living in the U.S. was indicated in a 2011 report by the CDC and the NCI, which noted that the number of cancer survivors in 2007 (11.7 million) increased by 19% from 2001 (9.8 million survivors). The number of cancer survivors in 1971 was 3 million.
Breast The breast is one of two prominences located on the upper ventral region of a primate's torso. Both females and males develop breasts from the same embryological tissues. In females, it serves as the mammary gland, which produces and sec ...
,
prostate The prostate is both an accessory gland of the male reproductive system and a muscle-driven mechanical switch between urination and ejaculation. It is found only in some mammals. It differs between species anatomically, chemically, and phys ...
, and colorectal cancers were the most common types of cancer among survivors, accounting for 51% of diagnoses. As of January 1, 2007, an estimated 64.8% of cancer survivors had lived ≥5 years after their diagnosis of cancer, and 59.5% of survivors were aged ≥65 years. A continued decline in cancer rates in the U.S. among both women and men, across most major racial groups, and in the most common cancer sites (lung, colon and rectum), was indicated in a 2013 report by the National Cancer Institute. However, the same report indicated an increase from 2000 to 2009 in cancers of the liver, pancreas and uterus.


Challenges

A multitude of factors have been cited as impeding progress in finding a cure for cancer and key areas have been identified and suggested as important to accelerate progress in cancer research. Since there are many different forms of cancer with distinct causes, each form requires different treatment approaches. However, this research could still lead to therapies and cures for many forms of cancer. Some of the factors that have posed challenges for the development of preventive measures and anti-cancer drugs and therapies include the following: * Inherent biological complexity of the disease: ** number of changes within a cell leading to the cancerous state ** disease
heterogeneity Homogeneity and heterogeneity are concepts often used in the sciences and statistics relating to the uniformity of a substance or organism. A material or image that is homogeneous is uniform in composition or character (i.e. color, shape, siz ...
due to different tissues of origin ** contribution of numerous genetic and environmental
risk factors In epidemiology, a risk factor or determinant is a variable associated with an increased risk of disease or infection. Due to a lack of harmonization across disciplines, determinant, in its more widely accepted scientific meaning, is often use ...
** complexity of cellular interactions and
cell signaling In biology, cell signaling (cell signalling in British English) or cell communication is the ability of a cell to receive, process, and transmit signals with its environment and with itself. Cell signaling is a fundamental property of all cellula ...
within the tumor microenvironment ** suitability of
model organisms A model organism (often shortened to model) is a non-human species that is extensively studied to understand particular biological phenomena, with the expectation that discoveries made in the model organism will provide insight into the working ...
for understanding human disease. * Roadblocks to translational medicine * Challenges of early detection and diagnosis * The drug approval process * Availability of and access to patients with suitable tumor tissue for research * Challenges in implementing preventive measures, such as the development and use of preventive drugs and therapies * Choropleth mapping of the changes over time, of the national incidence rate, by cancer type, relative to the population at risk, is a technical challenge.


Modern cancer research


Genome-based cancer research projects

The rise of a new class of molecular technologies developed during the Human Genome Project opens up new ways to study cancer and holds the promise for the discovery of new aspects of cancer biology that could eventually lead to novel, more effective diagnostics and therapies for cancer patients. These new technologies are capable of screening many
biomolecules A biomolecule or biological molecule is a loosely used term for molecules present in organisms that are essential to one or more typically biological processes, such as cell division, morphogenesis, or development. Biomolecules include lar ...
and genetic variations such as
SNPs In genetics, a single-nucleotide polymorphism (SNP ; plural SNPs ) is a germline substitution of a single nucleotide at a specific position in the genome. Although certain definitions require the substitution to be present in a sufficiently larg ...
and
copy number variation Copy number variation (CNV) is a phenomenon in which sections of the genome are repeated and the number of repeats in the genome varies between individuals. Copy number variation is a type of structural variation: specifically, it is a type of ...
s in a single experiment and are employed within
functional genomics Functional genomics is a field of molecular biology that attempts to describe gene (and protein) functions and interactions. Functional genomics make use of the vast data generated by genomic and transcriptomic projects (such as genome sequencing ...
and
personalized medicine Personalized medicine, also referred to as precision medicine, is a medical model that separates people into different groups—with medical decisions, practices, interventions and/or products being tailored to the individual patient based on the ...
studies. Speaking on the occasion of the announcement of $1 billion in new funding for genome-based cancer research, Dr.
Francis Collins Francis Sellers Collins (born April 14, 1950) is an American physician-geneticist who discovered the genes associated with a number of diseases and led the Human Genome Project. He is the former director of the National Institutes of Health (N ...
, director of the
NIH The National Institutes of Health, commonly referred to as NIH (with each letter pronounced individually), is the primary agency of the United States government responsible for biomedical and public health research. It was founded in the late ...
claimed, "We are about to see a quantum leap in our understanding of cancer."
Harold Varmus Harold Eliot Varmus (born December 18, 1939) is an American Nobel Prize-winning scientist. He is currently the Lewis Thomas University Professor of Medicine at Weill Cornell Medicine and a senior associate at the New York Genome Center. He was ...
, after his appointment to be the director of the NCI, said we are in a "golden era for cancer research", poised to profit from advances in our understanding of the cancer genome. High-throughput DNA sequencing has been used to study the whole genome sequence of two different cancer tissues: a small-cell lung cancer
metastasis Metastasis is a pathogenic agent's spread from an initial or primary site to a different or secondary site within the host's body; the term is typically used when referring to metastasis by a cancerous tumor. The newly pathological sites, then ...
and a
malignant melanoma Melanoma, also redundantly known as malignant melanoma, is a type of skin cancer that develops from the pigment-producing cells known as melanocytes. Melanomas typically occur in the skin, but may rarely occur in the mouth, intestines, or eye ...
cell line. The sequence information provides a comprehensive catalog of approximately 90% of the somatic mutations in the cancerous tissue, providing a more detailed molecular and genetic understanding of cancer biology than was previously possible, and offering hope for the development of new therapeutic strategies gleaned from these insights.


The Cancer Genome Atlas

The Cancer Genome Atlas ''The'' () is a grammatical article in English, denoting persons or things already mentioned, under discussion, implied or otherwise presumed familiar to listeners, readers, or speakers. It is the definite article in English. ''The'' is the m ...
(TCGA), a collaborative effort between the
National Cancer Institute The National Cancer Institute (NCI) coordinates the United States National Cancer Program and is part of the National Institutes of Health (NIH), which is one of eleven agencies that are part of the U.S. Department of Health and Human Services. ...
and the
National Human Genome Research Institute The National Human Genome Research Institute (NHGRI) is an institute of the National Institutes of Health, located in Bethesda, Maryland. NHGRI began as the Office of Human Genome Research in The Office of the Director in 1988. This Office transi ...
, is an example of a basic research project that is employing some of these new molecular approaches. One TCGA publication notes the following:
''Here we report the interim integrative analysis of DNA copy number, gene expression and DNA methylation aberrations in 206
glioblastoma Glioblastoma, previously known as glioblastoma multiforme (GBM), is one of the most aggressive types of cancer that begin within the brain. Initially, signs and symptoms of glioblastoma are nonspecific. They may include headaches, personality ...
s...Together, these findings establish the feasibility and power of TCGA, demonstrating that it can rapidly expand knowledge of the molecular basis of cancer.''
In a cancer research funding announcement made by President Obama in September 2009, TCGA project is slated to receive $175 million in funding to collect comprehensive gene sequence data on 20,000 tissue samples from people with more than 20 different types of cancer, in order to help researchers understand the genetic changes underlying cancer. New, targeted therapeutic approaches are expected to arise from the insights resulting from such studies.


Cancer Genome Project

The
Cancer Genome Project The Cancer Genome Project is part of the cancer, aging, and somatic mutation research based at the Wellcome Trust Sanger Institute in The United Kingdom. It aims to identify sequence variants/mutations critical in the development of human cancers. ...
at the Wellcome Trust Sanger Institute aims to identify sequence variants/
mutation In biology, a mutation is an alteration in the nucleic acid sequence of the genome of an organism, virus, or extrachromosomal DNA. Viral genomes contain either DNA or RNA. Mutations result from errors during DNA replication, DNA or viral repl ...
s critical in the development of human
cancer Cancer is a group of diseases involving abnormal cell growth with the potential to invade or spread to other parts of the body. These contrast with benign tumors, which do not spread. Possible signs and symptoms include a lump, abnormal b ...
s. The Cancer Genome Project combines knowledge of the
human genome The human genome is a complete set of nucleic acid sequences for humans, encoded as DNA within the 23 chromosome pairs in cell nuclei and in a small DNA molecule found within individual mitochondria. These are usually treated separately as the ...
sequence with high throughput mutation detection techniques.


Cancer research supportive infrastructure

Advances in
information technology Information technology (IT) is the use of computers to create, process, store, retrieve, and exchange all kinds of Data (computing), data . and information. IT forms part of information and communications technology (ICT). An information te ...
supporting cancer research, such as the NCI's
caBIG The cancer Biomedical Informatics Grid (caBIG) was a US government program to develop an open-source, open access information network called caGrid for secure data exchange on cancer research. The initiative was developed by the National Cance ...
project, promise to improve data sharing among cancer researchers and accelerate "the discovery of new approaches for the detection, diagnosis, treatment, and
prevention Prevention may refer to: Health and medicine * Preventive healthcare, measures to prevent diseases or injuries rather than curing them or treating their symptoms General safety * Crime prevention, the attempt to reduce deter crime and crim ...
of cancer, ultimately improving patient outcomes."


Modern cancer treatment


Cancer clinical trials

Researchers are considering ways to improve the efficiency, cost-effectiveness, and overall success rate of cancer clinical trials. Increased participation in rigorously designed clinical trials would increase the pace of research. Currently, about 3% of people with cancer participate in clinical trials; more than half of them are patients for whom no other options are left, patients who are participating in "exploratory" trials designed to burnish the researchers' résumés or promote a drug rather than to produce meaningful information, or in trials that will not enroll enough patients to produce a statistically significant result.


Targeted tumor treatment

A major challenge in cancer treatment is to find better ways to specifically target tumors with drugs and chemotherapeutic agents in order to provide a more effective, localized dose and to minimize exposure of healthy tissue in other parts of the body to the potentially adverse effects of the treatments. The accessibility of different tissues and organs to anti-tumor drugs contributes to this challenge. For example, the blood–brain barrier blocks many drugs that may otherwise be effective against brain tumors. In November 2009, a new, experimental therapeutic approach for treating
glioblastoma Glioblastoma, previously known as glioblastoma multiforme (GBM), is one of the most aggressive types of cancer that begin within the brain. Initially, signs and symptoms of glioblastoma are nonspecific. They may include headaches, personality ...
was published in which the anti-tumor drug
Avastin Bevacizumab, sold under the brand name Avastin among others, is a medication used to treat a number of types of cancers and a specific eye disease. For cancer, it is given by slow injection into a vein (Intravenous therapy, intravenous) and use ...
was delivered to the tumor site within the brain through the use of microcatheters, along with
mannitol Mannitol is a type of sugar alcohol used as a sweetener and medication. It is used as a low calorie sweetener as it is poorly absorbed by the intestines. As a medication, it is used to decrease pressure in the eyes, as in glaucoma, and to lo ...
to temporarily open the blood–brain barrier permitting delivery of the chemotherapy into the brain.


Public education and support

An important aspect to the war on cancer is improving public access to educational and supportive resources, to provide individuals with the latest information about cancer
prevention Prevention may refer to: Health and medicine * Preventive healthcare, measures to prevent diseases or injuries rather than curing them or treating their symptoms General safety * Crime prevention, the attempt to reduce deter crime and crim ...
and treatment, as well as access to support communities. Resources have been created by governmental and other organizations to provide support for cancer patients, their families and caregivers, to help them share information and find advice to guide decision making.


See also


References

{{DEFAULTSORT:War On Cancer Oncology Health policy in the United States Metaphors referring to war and violence