| 1. |
- Askling, Johan, et al.
(författare)
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Cancer risk in patients with rheumatoid arthritis treated with anti-tumor necrosis factor alpha therapies : does the risk change with the time since start of treatment?
- 2009
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Ingår i: Arthritis and Rheumatism. - : Wiley. - 0004-3591 .- 1529-0131. ; 60:11, s. 3180-3189
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Tidskriftsartikel (refereegranskat)abstract
- OBJECTIVE:To determine the short-term and medium-term risks of cancer in patients receiving anti-tumor necrosis factor alpha (anti-TNFalpha) therapies that have proven effective in the treatment of chronic inflammatory conditions.METHODS:By linking together data from the Swedish Biologics Register, Swedish registers of RA, and the Swedish Cancer Register, we identified and analyzed for cancer occurrence a national cohort of 6,366 patients with RA who first started anti-TNF therapy between January 1999 and July 2006. As comparators, we used a national biologics-naive RA cohort (n = 61,160), a cohort of RA patients newly starting methotrexate (n = 5,989), a cohort of RA patients newly starting disease-modifying antirheumatic drug combination therapy (n = 1,838), and the general population of Sweden. Relative risks (RRs) were estimated using Cox regression analyses, examining overall RR as well as RR by time since the first start of anti-TNF therapy, by the duration of active anti-TNF therapy, and by the anti-TNF agent received.RESULTS:During 25,693 person-years of followup in 6,366 patients newly starting anti-TNF, 240 first cancers occurred, yielding an RR of 1.00 (95% confidence interval 0.86-1.15) versus the biologics-naive RA cohort, and similar RRs versus the other 2 RA comparators. RRs did not increase with increasing time since the start of anti-TNF therapy, nor with the cumulative duration of active anti-TNF therapy. During the first year following the first treatment start, but not thereafter, dissimilar cancer risks for adalimumab, etanercept, and infliximab were observed.CONCLUSION:During the first 6 years after the start of anti-TNF therapy in routine care, no overall elevation of cancer risk and no increase with followup time were observed.
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| 2. |
- Ekheden, Isabella, et al.
(författare)
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Survival of esophageal and gastric cancer patients with adjuvant and palliative chemotherapy-a retrospective analysis of a register-based patient cohort
- 2020
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Ingår i: European Journal of Clinical Pharmacology. - : Springer Nature. - 0031-6970 .- 1432-1041. ; 76:7, s. 1029-1041
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Tidskriftsartikel (refereegranskat)abstract
- PurposeThe survival of esophageal and gastric cancer patients treated with chemotherapy is rarely assessed outside of clinical trials. Therefore, we compared the effectiveness of various curative or palliative chemotherapy regimens on the survival of esophageal and gastric cancer patients in a “real world” clinical setting.MethodsWe identified a cohort of 966 incident esophageal and gastric cancer patients in Stockholm/Gotland County (a low-risk Western population) during 2008–2013. Patients who received chemotherapy with curative intention (n = 279) and palliative intention (n = 182) were analyzed separately. Using Cox proportional hazards regression models, we estimated hazard ratios (HRs) with 95% confidence intervals (CIs) and adjusted for the potential confounding factors: age, sex, TNM stage, radiotherapy, comorbidity, marital status, education, income, and country of birth.ResultsIn esophageal cancer patients with curative treatment intention, we observed a higher hazard for death among patients who received carboplatin-fluorouracil compared to patients who received cisplatin-fluorouracil, corresponding to a HR of 2.18 (95% CI 1.09–4.37). Conversely, in patients with cancer in the gastroesophageal junction who had a curative treatment intention at diagnosis, we observed a reduced hazard for death among those who received fluorouracil-oxaliplatin, compared to patients who received cisplatin-fluorouracil (HR 0.28; 95% CI 0.08–0.96).ConclusionAmong patients with esophageal cancer who received treatment with curative intention, cisplatin-fluorouracil was associated with better survival compared to carboplatin-fluorouracil, while patients with gastroesophageal junction cancer who were treated with cisplatin-fluorouracil had worse survival compared to fluorouracil-oxaliplatin.
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| 3. |
- Fiolet, Thibault, et al.
(författare)
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Dietary intakes of dioxins and polychlorobiphenyls (PCBs) and breast cancer risk in 9 European countries
- 2022
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Ingår i: Environment International. - : Elsevier. - 0160-4120 .- 1873-6750. ; 163
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Tidskriftsartikel (refereegranskat)abstract
- Background: Dioxins and polychlorobiphenyls (PCBs) are persistent organic pollutants that have demonstrated endocrine disrupting properties. Several of these chemicals are carcinogenic and positive associations have been suggested with breast cancer risk. In general population, diet represents the main source of exposure.Methods: Associations between dietary intake of 17 dioxins and 35 PCBs and breast cancer were evaluated in the European Prospective Investigation into Cancer and Nutrition (EPIC) cohort from nine European countries using multivariable Cox regressions. The present study included 318,607 women (mean ± SD age: 50.7 ± 9.7) with 13,241 incident invasive breast cancers and a median follow-up of 14.9 years (IQR = 13.5–16.4). Dietary intake of dioxins and PCBs was assessed combining EPIC food consumption data with food contamination data provided by the European Food Safety Authority.Results: Exposure to dioxins, dioxins + Dioxin-Like-PCBs, Dioxin-Like-PCBs (DL-PCBs), and Non-Dioxin-Like-PCBs (NDL-PCBs) estimated from reported dietary intakes were not associated with breast cancer incidence, with the following hazard ratios (HRs) and 95% confidence intervals for an increment of 1 SD: HRdioxins = 1.00 (0.98 to 1.02), HRdioxins+DL-PCB = 1.01 (0.98 to 1.03), HRDL-PCB = 1.01 (0.98 to 1.03), and HRNDL-PCB = 1.01 (0.99 to 1.03). Results remained unchanged when analyzing intakes as quintile groups, as well as when analyses were run separately per country, or separating breast cancer cases based on estrogen receptor status or after further adjustments on main contributing food groups to PCBs and dioxins intake and nutritional factors.Conclusions: This large European prospective study does not support the hypothesis of an association between dietary intake of dioxins and PCBs and breast cancer risk.
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| 4. |
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| 5. |
- Gustavsson, Erik, et al.
(författare)
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Novel drug candidates targeting Alzheimers disease : ethical challenges with identifying the relevant patient population
- 2021
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Ingår i: Journal of Medical Ethics. - : BMJ Publishing Group Ltd. - 0306-6800 .- 1473-4257. ; 47:9, s. 608-614
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Tidskriftsartikel (refereegranskat)abstract
- Intensive research is carried out to develop a disease-modifying drug for Alzheimers disease (AD). The development of drug candidates that reduce Ass or tau in the brain seems particularly promising. However, these drugs target people at risk for AD, who must be identified before they have any, or only moderate, symptoms associated with the disease. There are different strategies that may be used to identify these individuals (eg, population screening, cascade screening, etc). Each of these strategies raises different ethical challenges. In this paper, we analyse these challenges in relation to the risk stratification for AD necessary for using these drugs. We conclude that the new drugs must generate large health benefits for people at risk of developing AD to justify the ethical costs associated with current risk stratification methods, benefits much larger than current drug candidates have. This conclusion raises a new set of ethical questions that should be further discussed.
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| 6. |
- Gustavsson, Erik, et al.
(författare)
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Should relational effects be considered in health care priority setting?
- 2023
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Ingår i: Bioethics. - : John Wiley & Sons. - 0269-9702 .- 1467-8519. ; 37:7, s. 668-673
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Tidskriftsartikel (refereegranskat)abstract
- It is uncontroversial to claim that the extent to which health care interventions benefit patients is a relevant consideration for health care priority setting. However, when effects accrue to the individual patient, effects of a more indirect kind may accrue to other individuals as well, such as the patient's children, friends, or partner. If, and if so how, such relational effects should be considered relevant in priority setting is contentious. In this paper, we illustrate this question by using disease-modifying drugs for Alzheimer's disease as a case in point. The ethical analysis begins by sketching the so-called prima facie case for ascribing moral weight to relational effects and then moves on to consider a number of objections to it. We argue that, whereas one set of objections may be dismissed, there is another set of arguments that poses more serious challenges for including relational effects in priority setting.
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| 7. |
- Gustavsson, Erik, 1982-, et al.
(författare)
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Sjukdomsmodifierande läkemedel mot Alzheimers sjukdom : etiska aspekter av prioriteringar och screening
- 2020
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- I skrivande stund pågår det intensiv forskning för att få fram ett sjukdomsmodifierande läkemedel mot Alzheimers sjukdom (AD). Vid introduktion av sådana läkemedel kommer en rad etiskt svåra frågor kring screening och prioriteringar av vårdens resurser, att aktualiseras. Föreliggande rapport behandlar dessa frågor.Trots att de nya läkemedlens effekt sannolikt har en påverkan på närstående till personer med AD så är det vår bedömning att den svenska etiska plattformen inte lämnar något utrymme för sådan hänsyn. Det finns också skäl att vara särskilt uppmärksam på utsträckningen i vilken de surrogatmått som används i de kliniska studierna faktiskt är av klinisk relevans.När det gäller att väga samman patientnytta som tillfaller olika individer är det vår bedömning att plattformen inte tillåter aggregering av patientnytta på ett sådant sätt. Det innebär att det faktum att personer med AD utgör en stor patientgrupp utgör i sig inte ett skäl för högre prioritet då effekten skall bedömas med avseende på hur den tillfaller varje enskild individ. I ett scenario där budgetpåverkan blir så stor att man behöver prioritera inom gruppen så tycks det saknas för prioriteringar relevanta kriterier.Manifest AD är ett tillstånd med mycket stor svårighetsgrad. Men eftersom de nya läkemedlen siktar in sig på den prekliniska eller fasen i vilken patienter har en lindrig kognitiv störning så bör svårighetsgraden av tillståndet viktas ned med avseende på sannolikheten att faktiskt insjukna i AD. Tillståndets svårighetsgrad blir därmed olika för läkemedel som siktar på den prekliniska fasen, de som siktar på fasen med lindrig kognitiv störning och de som siktar på kliniska stadier av AD. Eftersom personer med AD kan ha sämre förutsättningar än andra patientgrupper att kommunicera sina behov bör de beaktas särskilt. Det innebär dock inte någon högre prioritet utan en markering att personer med AD har samma rätt till hälso- och sjukvård som andra grupper med liknande behov.Populationsscreening för AD är förknippat med flera problem. Det finns generella problem med screening ur exempelvis autonomisynpunkt. Men det finns också problem som relaterar till att nuvarande metoder för riskstratifiering är så opålitliga vilket i sin tur resulterar i falska negativa (med risk för underbehandling) och falska positiva (med risk för överbehandling). Screening i fasen då patienten har en lindrig kognitiv störning har (förutom de problem som kommer med populationsscreening) problem med ojämlikhet och godtycke. När den kliniska fasen inträder har poängen med screening gått förlorad: ju senare identifikation, desto mindre potentiella behandlingsfördelar jämfört med vanlig diagnostik som den går till idag.Det är vår sammantagna bedömning att de nya läkemedlen måste generera stora hälsovinster för personer som riskerar att insjukna i AD för att berättigas allmän finansiering och för att rättfärdiga de etiska kostnader som kommer med de nuvarande diagnostiska metoderna.
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| 8. |
- Raaschou, Pauline
(författare)
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Anti-TNF therapy and malignancy in patients with rheumatoid arthritis : studies on cancer incidence, recurrence and survival
- 2014
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Tumor necrosis factor i nhibitors (TNFi) h ave become a backbone treatment of rheumatoid arthritis (RA). TNF has multiple and incompletely understood functions in tumor biology, and cancer is considered a potential adverse event of TNFi treatment. The overarching aim of this thesis was to investiga te the risk - benefit balance in RA - patients treated with TNFi, focusing on skin cancer, breast cancer progress and post - cancer survival. To put the risks into context we also contrasted RA - patients never treated with biological drugs (biologics - naïve) to th e general population. We used data from medical files, national health and census registers and the RA quality of care register, to define clinically relevant subsets of RA and cancer - related outcomes among them . In study I we investigated the risk o f malignant melanoma and all - site cancer in TNFi - treated RA - patients (1998 - 2010), biologics - naïve RA - patients, and matched general population comparators. We detected a 50% increased risk of invasive malignant melanoma, but no increased risk of in situ mel anoma or all - site cancer among TNFi - treated compared to biologics - naïve RA - patients. In study II we investigated the risk of non squa mous cell cancer (SCC, 1998 - 2011 ) and b asal cell cancer (BCC, 2004 - 2011 ) in TNFi - treated RA - patients, biologics - naïve RA - pa tients, and matched general population comparators. We found a 20% increase in risk of in situ SCC among TNFi - treated compared to biologics - naïve RA - patients, but no increased risk of BCC. In biologics - naïve RA - patients, we detected a doubled risk of SCC, and a 20% increased risk of BCC compared to the general population . In study III we investigated the risk of breast cancer recurrence in 120 female RA - patients who started TNFi treatment (1999 - 2010) on average a decade after diagnosis of breast cancer. As comparator we used 120 biologics - naïve RA - patients with a history of breast cancer, matched on sex, age, year and cancer stage at diagnosis, and residency. We found no difference in risk of recurrent breast cancer and all - cause mortality between the two g roups, after adjusting for breast cancer related prognostic factors. In study IV we investigated the clinical stage at diagnosis, and post - cancer survival of cancers developing during or after TNFi treatment (1999 - 2007), compared to cancers among biologics - naïve RA - patients. We used both a matched and an unmatched approach. No major differences in cancer stage at diagnosis or in post - cancer survival were observed among TNFi - treated RA - patients, compared to biologics - naïve RA - patients with cancer.
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| 9. |
- Raaschou, Pauline, et al.
(författare)
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Rheumatoid arthritis, anti-tumour necrosis factor therapy, and risk of malignant melanoma : nationwide population based prospective cohort study from Sweden
- 2013
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Ingår i: BMJ. British Medical Journal. - : BMJ. - 0959-8146 .- 0959-535X. ; 346
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Tidskriftsartikel (refereegranskat)abstract
- OBJECTIVES: To investigate the potential association between tumour necrosis factor (TNF) inhibitor treatment and malignant melanomas in rheumatoid arthritis, melanoma risks in rheumatoid arthritis patients not treated with biological drugs, and risk of all site cancer with TNF inhibitors as used in rheumatoid arthritis.DESIGN: Population based cohort study.SETTING: Prospectively recorded data from national clinical, health, and demographic registers in Sweden 2001-10. Patients with rheumatoid arthritis treated (n = 10,878) or not (n = 42,198) with TNF inhibitors and matched general population comparators (n = 162,743).MAIN OUTCOME MEASURES: The primary outcome was first invasive melanoma in people without any history of invasive cancer of any type. Hazard ratios were estimated using Cox regression, comparing non-biological drug treated rheumatoid arthritis patients with the general population comparator and TNF inhibitor treated rheumatoid arthritis patients with those not treated with biological drugs. Secondary outcomes included in situ melanomas, second primary melanomas, and all site cancer.RESULTS: 113 first invasive melanomas occurred in rheumatoid arthritis patients not treated with biological drugs, and 393 occurred in the general population comparator cohort. Rheumatoid arthritis patients not treated with biological drugs were not at significantly increased risk of melanoma compared with the general population (hazard ratio 1.2, 95% confidence interval 0.9 to 1.5). 38 first invasive melanomas occurred in rheumatoid arthritis patients treated with TNF inhibitors; these patients had an increased risk of melanoma compared with rheumatoid arthritis patients not treated with biological drugs (hazard ratio 1.5, 1.0 to 2.2; 20 additional cases per 100,000 person years). The risk of a second primary melanoma was non-significantly increased (hazard ratio 3.2, 0.8 to 13.1; n=3 v 10) in rheumatoid arthritis patients treated with TNF inhibitors compared with those not treated with biological drugs.CONCLUSION: Overall, patients with rheumatoid arthritis who have not been treated with biological drugs are not at increased risk of invasive melanoma compared with the general population. Rheumatoid arthritis patients selected for TNF inhibitor treatment are not at increased overall risk for cancer but have a 50% increased relative risk of invasive melanoma. Given the small increase in absolute risk, these finding may not markedly shift the overall risk-benefit balance of TNF inhibitors as used in clinical practice but might do so in patients at high risk of melanoma for other reasons.
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| 10. |
- Raaschou, Pauline, et al.
(författare)
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Rheumatoid arthritis, anti-tumour necrosis factor treatment, and risk of squamous cell and basal cell skin cancer : cohort study based on nationwide prospectively recorded data from Sweden.
- 2016
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Ingår i: The BMJ. - : BMJ. - 1756-1833. ; 352
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Tidskriftsartikel (refereegranskat)abstract
- OBJECTIVE: To investigate the risk of squamous cell and basal cell skin cancer in patients with rheumatoid arthritis naive to biologic drugs, in patients starting tumour necrosis factor (TNF) inhibitor treatment, and in the general population.DESIGN: Population based cohort study.SETTING: Nationwide data from Sweden.PARTICIPANTS: Cohort of patients with rheumatoid arthritis naive to biologics (n=46 409), cohort of patients with rheumatoid arthritis starting TNF inhibitor treatment as first biologic in 1998-2012 (n=12 558), and matched general population comparator cohort, identified through national quality of care and health registers.MAIN OUTCOME MEASURE: Hazard ratio of first in situ or invasive squamous cell skin cancer (1998-2012) and first basal cell cancer (2004-12).RESULTS: For basal cell cancer, the hazard ratio was 1.22 (95% confidence interval 1.07 to 1.41) comparing biologics-naive rheumatoid arthritis patients with the general population and 1.14 (0.98 to 1.33; 236 v 1587 events) comparing TNF inhibitor treated patients with biologics-naive patients. For squamous cell cancer, the hazard ratio was 1.88 (1.74 to 2.03) comparing biologics-naive rheumatoid arthritis patients with the general population and 1.30 (1.10 to 1.55; 191 v 847 events) comparing TNF inhibitors with biologics-naive patients; the latter translated to an annual number needed to harm in the order of 1600. Among people with a history of squamous cell or basal cell cancer, TNF inhibitors did not further increase risks.CONCLUSION: A small to moderately increased risk of basal cell cancer was seen in biologics-naive rheumatoid arthritis patients, with no further effect of TNF inhibitors. For squamous cell cancer, the risk was nearly doubled in biologics-naive patients, with a further 30% increase in risk among patients treated with TNF inhibitors; this translates to one additional case for every 1600 years of treatment experience, assuming that this association reflected causality. Vigilance regarding skin malignancies may be advisable in rheumatoid arthritis, irrespective of TNF inhibitor treatment. Most of the increase in risk for non-melanoma skin cancer in patients with rheumatoid arthritis treated with TNF inhibitors originates from factors other than that treatment.
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| 11. |
- Raaschou, Pauline, et al.
(författare)
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TNF inhibitor therapy and risk of breast cancer recurrence in patients with rheumatoid arthritis : a nationwide cohort study.
- 2015
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Ingår i: Annals of the Rheumatic Diseases. - : BMJ. - 0003-4967 .- 1468-2060. ; 74:12, s. 2137-2143
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Tidskriftsartikel (refereegranskat)abstract
- OBJECTIVE: To investigate the risk of breast cancer recurrence in rheumatoid arthritis (RA)-patients with tumour necrosis factor inhibitor (TNFi) treatment and a history of breast cancer, taking several breast cancer, comorbidity and RA-related prognostic factors into account.METHODS: 143 female TNFi-treated patients (1999-2010) with RA and a history of breast cancer before start of TNFi were identified through register linkages, and matched 1:1 from a cohort of 1598 comparable biologics-naive individuals. 120 TNFi-treated and 120 matched biologics-naive individuals with a history of equally recent/distant breast cancer met the eligibility criteria and comprised the final study population. The primary outcome was first recurrence of breast cancer. Through register-linkages and chart review, individuals were followed until 2011. HRs for recurrence were calculated using Cox regression.RESULTS: The median time from breast cancer diagnosis until TNFi-treatment/start of follow-up was 9.4 years. Modest differences in breast cancer characteristics and/or treatment among TNFi-treated and biologics-naive individuals were noted at time of breast cancer diagnosis. Median follow-up from TNFi start was 4.9 years (4.6 years among biologics-naive). Among the TNFi-treated, 9 developed a breast cancer recurrence (crude incidence rate 15/1000 person-years) during follow-up, compared with 9 among the matched biologics-naive (16/1000 person-years). The adjusted corresponding HR was 1.1 (95% CI 0.4 to 2.8).CONCLUSIONS: Among patients with RA and a history of breast cancer, those who started TNFi-treatment did not experience more breast cancer recurrences than patients with RA treated otherwise. The generalisability of our findings to women with a very recent or a poor prognosis of breast cancer remains unknown.
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| 12. |
- Raaschou, Pauline, et al.
(författare)
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Tumor necrosis factor inhibitors and cancer recurrence in Swedish patients with rheumatoid arthritis A nationwide population-based cohort study
- 2018
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Ingår i: Annals of Internal Medicine. - 0003-4819 .- 1539-3704. ; 169:5, s. 291-299
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Tidskriftsartikel (refereegranskat)abstract
- Background: Use of tumor necrosis factor inhibitors (TNFi) in patients with a history of cancer remains a clinical dilemma. Objective: To investigate whether TNFi treatment in rheumatoid arthritis (RA) is associated with increased risk for cancer recurrence. Design: Population-based cohort study based on linkage of nationwide registers. Setting: Sweden. Participants: Patients with RA who started TNFi treatment between 2001 and 2015, after being diagnosed with cancer, and matched patients with RA and a history of the same cancer who had never received biologics. Measurements: The primary outcome was the first recurrence of cancer. Adjusted Cox proportional hazards models were used to estimate hazard ratios (HRs), taking into account time, cancer type, and whether the cancer was invasive or in situ (or tumor, node, metastasis [TNM] classification system stage in a subset of patients). Results: Among 467 patients who started TNFi treatment (mean time after cancer diagnosis, 7.9 years), 42 had cancer recurrences (9.0%; mean follow-up, 5.3 years); among 2164 matched patients with the same cancer history, 155 had recurrences (7.2%; mean follow-up, 4.3 years) (HR, 1.06 [95% CI, 0.73 to 1.54). Hazard ratios were close to 1 in analyses of patient subsets matched on cancer stage or with similar time from index cancer diagnosis to the start of TNFi treatment, as well as in unmatched analyses. Several CIs had upper limits close to 2. Limitation: The outcome algorithm was partly nonvalidated, and channeling bias was possible if patients with a better index cancer prognosis were more likely to receive TNFi. Conclusion: The findings suggest that TNFi treatment is not associated with increased risk for cancer recurrence in patients with RA, although meaningful risk increases could not be ruled out completely.
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