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Cancer risk in hospitalized rheumatoid arthritis patients

Hemminki, K LU ; Li, X LU ; Sundquist, K LU and Sundquist, J LU (2008) In Rheumatology (Oxford, England) 47(5). p.698-701
Abstract

OBJECTIVES: Patients diagnosed with RA have been at an increased risk of many cancers and at a decreased risk of some cancers. We planned to revisit the theme by using a nation-wide population of RA patients.

METHODS: An RA research database was constructed by identifying hospitalized RA patients from the Hospital Discharge Register and cancer patients from the Cancer Registry. Earlier studies from Sweden have shown that some 75% of RA patients have been hospitalized at some time point. Follow-up of 42,262 RA patients was carried out from year 1980 to 2004 including separate follow-ups for shorter intervals. Standardized incidence ratios (SIRs) were calculated for cancer in RA patients by comparing with subjects without... (More)

OBJECTIVES: Patients diagnosed with RA have been at an increased risk of many cancers and at a decreased risk of some cancers. We planned to revisit the theme by using a nation-wide population of RA patients.

METHODS: An RA research database was constructed by identifying hospitalized RA patients from the Hospital Discharge Register and cancer patients from the Cancer Registry. Earlier studies from Sweden have shown that some 75% of RA patients have been hospitalized at some time point. Follow-up of 42,262 RA patients was carried out from year 1980 to 2004 including separate follow-ups for shorter intervals. Standardized incidence ratios (SIRs) were calculated for cancer in RA patients by comparing with subjects without RA.

RESULTS: Many cancers were in excess in RA patients, especially Hodgkin disease, non-Hodgkin lymphoma and squamous cell skin cancer; a novel association was found for non-thyroid endocrine tumours. Colon, rectal and endometrial cancers were decreased in RA patients. When RA patients were first hospitalized after 1999, the SIRs for melanoma, squamous cell skin and upper aerodigestive tract cancers and for leukaemia were increased compared with previous periods.

CONCLUSIONS: This study, the largest so far published, quantified the increased and decreased site-specific risks of cancer in RA patients. The recent increases in the risks of squamous cell skin and upper aerodigestive tract cancers, melanoma and leukaemia call for continuous vigilance and recording of changes in treatment.

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author
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Arthritis, Rheumatoid/complications, Carcinoma, Squamous Cell/complications, Databases, Factual, Follow-Up Studies, Hospitalization, Humans, Immunosuppressive Agents/therapeutic use, Leukemia/complications, Lymphoma/complications, Melanoma/complications, Neoplasms/complications, Registries, Risk Assessment/methods, Skin Neoplasms/complications, Sweden
in
Rheumatology (Oxford, England)
volume
47
issue
5
pages
4 pages
publisher
Oxford University Press
external identifiers
  • scopus:42949097388
ISSN
1462-0332
DOI
10.1093/rheumatology/ken130
language
English
LU publication?
no
id
f834cf18-6053-4834-b139-3b9aa3d2a9ff
date added to LUP
2019-01-30 10:59:13
date last changed
2019-08-14 04:31:36
@article{f834cf18-6053-4834-b139-3b9aa3d2a9ff,
  abstract     = {<p>OBJECTIVES: Patients diagnosed with RA have been at an increased risk of many cancers and at a decreased risk of some cancers. We planned to revisit the theme by using a nation-wide population of RA patients.</p><p>METHODS: An RA research database was constructed by identifying hospitalized RA patients from the Hospital Discharge Register and cancer patients from the Cancer Registry. Earlier studies from Sweden have shown that some 75% of RA patients have been hospitalized at some time point. Follow-up of 42,262 RA patients was carried out from year 1980 to 2004 including separate follow-ups for shorter intervals. Standardized incidence ratios (SIRs) were calculated for cancer in RA patients by comparing with subjects without RA.</p><p>RESULTS: Many cancers were in excess in RA patients, especially Hodgkin disease, non-Hodgkin lymphoma and squamous cell skin cancer; a novel association was found for non-thyroid endocrine tumours. Colon, rectal and endometrial cancers were decreased in RA patients. When RA patients were first hospitalized after 1999, the SIRs for melanoma, squamous cell skin and upper aerodigestive tract cancers and for leukaemia were increased compared with previous periods.</p><p>CONCLUSIONS: This study, the largest so far published, quantified the increased and decreased site-specific risks of cancer in RA patients. The recent increases in the risks of squamous cell skin and upper aerodigestive tract cancers, melanoma and leukaemia call for continuous vigilance and recording of changes in treatment.</p>},
  author       = {Hemminki, K and Li, X and Sundquist, K and Sundquist, J},
  issn         = {1462-0332},
  keyword      = {Arthritis, Rheumatoid/complications,Carcinoma, Squamous Cell/complications,Databases, Factual,Follow-Up Studies,Hospitalization,Humans,Immunosuppressive Agents/therapeutic use,Leukemia/complications,Lymphoma/complications,Melanoma/complications,Neoplasms/complications,Registries,Risk Assessment/methods,Skin Neoplasms/complications,Sweden},
  language     = {eng},
  number       = {5},
  pages        = {698--701},
  publisher    = {Oxford University Press},
  series       = {Rheumatology (Oxford, England)},
  title        = {Cancer risk in hospitalized rheumatoid arthritis patients},
  url          = {http://dx.doi.org/10.1093/rheumatology/ken130},
  volume       = {47},
  year         = {2008},
}