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UKCRC Health Research Classification System

Cancer and conditions predisposing to cancer

Advice on health categories

In studies of cancer, only the Cancer category should be used – do not code for the site. This is in line with the coding guidance to assign health categories based on the main disease and not pathogenesis or site of action. However if the research involves studying a condition that predisposes to cancer, it may be appropriate to also code for the condition.

e.g. studies of Barrett’s oesophagus in relation to cancer would be 50% Oral and Gastrointestinal and 50% Cancer.

e.g. studies of pathogens and their association with the development of cancer, such as Human Papilloma Virus (HPV) or Helicobacter pylori, should be coded 50% Infection and 50% Cancer.

Studies of the normal role of oncogenes and tumour suppressor genes in a non diseased cell may be coded as 50% Generic Health Relevance and 50% Cancer.

Advice on research activities

Cancer is not a ‘normal’ process and hence studies that specifically relate to the cause of cancer are rarely coded within the 1 Underpinning code group.

In particular studies of abnormal cell cycle or DNA repair in relation to cancer should not be coded within the 1 Underpinning code group.

Studies of the normal role of oncogenes and tumour suppressor genes in a non diseased cell should be coded as 50% 1.1 Biological and 50% 2.1 Endogenous risks.

Main inclusion criteria

Identification and characterisation of endogenous factors known or suspected to be involved in the cause, risk or development of disease, conditions or ill health including

  • genes and gene products, molecular, cellular and physiological structures and functions
  • biological factors linked to ethnicity, age, gender, pregnancy and body weight
  • endogenous biological factors or pathways involved in responses to infection or damage by external factors
  • metastases, degenerative processes, regeneration and repair
  • complications, reoccurrence and secondary conditions
  • bioinformatics and structural studies
  • development and characterisation of models

 

Advice on research activities

To be used to code all biological causes of disease including the following

  • Host cell biological responses to infection
  • prion/TSE aetiological studies
  • ischemic preconditioning

Characterisation of pathways to identify candidates that may potentially be used as diagnostic markers should be coded as 2.1 Endogenous risks and not 4.1 Marker discovery.

Characterisation of the biological cause of psychological conditions should be coded as 2.1. However 2.3 Psychological risks can also be used if the study includes investigation of symptoms and characteristics of the psychological condition.

Awards that are focused on therapeutic development or diagnostics will often yield information about the mechanism of a disease. However, this is generally a secondary outcome and shouldn’t be coded 2.1 unless this is clearly stated as one of the primary objective of the research.

Excludes basic immune and pain responses and wound healing studies that are not linked to a specific disease/condition stimulus and normal ageing or pregnancy not linked to a condition which should be coded as 1.1 Biological normal function.

Excludes normal cell cycle and normal DNA repair and replication which should be coded as 1.1 Biological.

Official terminology

Full name of code

Short name Unique ID
2.1 Biological and endogenous factors 2.1 Endogenous risks

HRCS_RA_2_1

 

Related external links

Common Scientific Outline (CSO) – 1.2 Cancer Initiation: Alterations in Chromosomes
Common Scientific Outline (CSO) – 1.3 Cancer Initiation: Oncogenes and Tumour Suppressor Genes
Common Scientific Outline (CSO) – 1.4 Cancer Progression and Metastasis
Common Scientific Outline (CSO) – 2.2 Endogenous Factors in the origin and cause of cancer
Common Scientific Outline (CSO) – 2.3 Interactions of Genes and/or Genetic Polymorphisms with Exogenous and/or Endogenous Factors

Main inclusion criteria

  • Research applicable to all diseases and conditions or to general health and well-being of individuals.
  • Public health research, epidemiology and health services research that is not focused on specific conditions.
  • Underpinning biological, psychosocial, economic or methodological studies that are not specific to individual diseases or conditions.

 

Advice on health categories

There are four main circumstances where the Generic Health Relevance category is most applicable:

  1. Research that is relevant to all diseases and conditions or to general health and well-being.
  2. Any research that cannot be attributed to a particular disease or condition or to normal function of a specific type of cell or system, defined by the top 19 health categories.
  3. If research is judged relevant to more than five Health Categories then these should be substituted for 100% Generic Health Relevance.
  4. As an additional code for studies with a disease(s)/condition(s) of focus which also has relevance to many other diseases/conditions.
    • This final circumstance has considerable scope, so additional guidance is given below.

 

Generic Health Relevance as an additional code

If the main focus of the research is directed at several specified diseases and also has implications for many other conditions, the appropriate specific Health Categories should be used as well as applying the Generic category. (Note that this does not apply to diseases that may be listed within the background information or are noted as ‘being relevant’ to the study under investigation; many awards will reference multiple conditions to provide a context for the research, but always apply coding based on the lifetime of the award – (see the coding guidance on assigning health categories.)

Examples of this use of Generic Health Relevance coding appears across the HRCS guidance, including:

 

Official terminology

Full name of category

Short name Unique ID
Generic health relevance Generic

HRCS_HC_20GEN

 

Related external links

None.

Main inclusion criteria

Inflammatory bowel disease, Crohn’s disease, diseases of the mouth, teeth, oesophagus, digestive system including liver and colon, and normal oral and gastrointestinal development and function.

 

Advice on health categories

Includes dental research and studies on the mouth, throat, stomach, liver, pancreas (not diabetes/insulin related), gut and colon.

Also suitable for problems linked to food absorption by the gut.
 

Official terminology

Full name of category

Short Name Unique ID
Oral and gastrointestinal Oral

HRCS_HC_14ORA

 

Related external links

International Classification of Diseases (ICD 10 v2016) – Chapter XI:   Diseases of the digestive system (K00-K93)
 

Main inclusion criteria

Studies of normal biology including:

  • genes and gene products
  • molecular, cellular and physiological structures and function
  • biological pathways and processes including normal immune function
  • developmental studies and normal ageing
  • bioinformatics and structural studies
  • development and characterisation of model systems

 

Advice on research activities

To be used for research involving normal biological function including the following:

Excludes studies characterising proteins or pathways linked to a condition or disease.

Excludes studies of processes associated to cancer which are rarely ‘normal’.

Official terminology

Full name of code

Short name Unique ID
1.1 Normal biological development and functioning 1.1 Biological

HRCS_RA_1_1

 

Related external links

Common Scientific Outline (CSO) – 1.1 Normal Functioning

Main inclusion criteria

Research that underpins investigations into the cause, development, detection, treatment and management of diseases, conditions and ill health.

 

Advice on research activities

This code group is for all types of research into ‘normal’ functions and processes in ‘healthy’ humans or systems.

Excludes research where the main aims relate to investigation of the cause, development, prevention, detection, treatment or management of a disease or condition.
 

Official terminology

Full name of code

Short name Unique ID
1 Underpinning research 1 Underpinning

HRCS_RAG_1

 

Related external links

Common Scientific Outline (CSO) – 1 Biology

Summary of Underpinning sub-codes

Main inclusion criteria

Diseases caused by pathogens, acquired immune deficiency syndrome, sexually transmitted infections and studies of infection and infectious agents.
 

Advice on health categories

Infection should be used for all research on pathogens and diseases caused by infection. These studies should be coded as 100% Infection and should not also be coded to the target disease site.

e.g. infection by malaria parasite should be coded as 100% Infection and not Blood.

e.g. respiratory infections should be coded as 100% Infection and not Respiratory.

Studies involving acute immune response to infection should be coded as Infection. However studies of natural tolerance and immunity to infections should be coded as 100% Inflammatory and Immune System.

Excludes TSEs, CJD and prion studies which should be coded as 100% Neurological regardless of whether the study is investigating transmission or mechanism of disease.

Infections can often follow or precede other diseases or conditions. There is general guidance on sequelae and side effects of disease, but there are also several examples across the existing HRCS guidance where addition of further health categories would be recommended:

  • Studies of the downstream consequences of infection may also be coded to the disease or condition under investigation.
    • e.g. surgery on diseased liver from Hepatitis C infection should be coded as 50% Infection and 50% Oral and Gastrointestinal.
  • Studies that involve infection of a specific target patient group should be coded as 50% Infection and 50% to the appropriate health category.
    • e.g. respiratory infection in people with cystic fibrosis should be coded as 50% Infection and 50% Congenital Disorders.
  • General studies on sexual health, including sexually transmitted infections (STIs), should be coded as 50% Infection and 50% Reproductive Health and Childbirth, but  only if there is no named pathogen. If a pathogen is specified, use 100% Infection.
    • e.g. Studies of total STI rate in teenagers should be coded as 50% Infection, 50% Reproduction.
    • e.g. Studies of gonorrhea in teenagers should be coded as 100% Infection.
  • Studies of cancer causing pathogens should be coded as 50% Cancer and 50% Infection.
  • Sepsis should be coded as 50% Infection and 50% Inflammatory and Immune System.

 

Official terminology

Full name of category

Short name Unique ID
Infection Infection

HRCS_HC_07INF

 

Related external links

International Classification of Diseases (ICD 10 v2016) – Chapter I: Certain infectious and parasitic diseases (A00-B99)

Main inclusion criteria

All types of neoplasms, including benign, potentially malignant, malignant (cancer) and canerous growths. This includes leukaemia and mesothelioma.

 

Advice on health categories

Do not code to the site of the cancer. However if the research involves studying a condition that predisposes to cancer then it may be appropriate to code for this condition as well.

e.g. The role of Barrett’s oesophagus in cancer would be 50% Oral and Gastrointestinal and 50% Cancer.

Similarly research on pathogens associated with the development of cancer should be coded as 50% Cancer and 50% Infection.

Studies of the normal role of oncogenes, tumour suppressor genes, and cell cycle checkpoints in a non diseased cell should be coded as 50% Generic Health Relevance and 50% Cancer.

Excludes general studies of angiogenesis which should be coded as Cardiovascular. However the development of anti-angiogenic drugs to inhibit tumour growth would be coded as Cancer.

Excludes normal studies of cell cycle and DNA replication and repair which should be coded as Generic.

 

Official terminology

Full name of category

Short name Unique ID
Cancer Cancer

HRCS_HC_02CAN

 

Related external links

International Classification of Diseases (ICD 10 v2016) – Chapter II:   Neoplasms (C00-D48)

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