scholarly journals The Impact of Prior Malignancies on Second Malignancies and Survival in MM Patients: A Population-Based Study

Blood ◽  
2016 ◽  
Vol 128 (22) ◽  
pp. 3246-3246
Author(s):  
Gudbjorg Jonsdottir ◽  
Sigrún H. Lund ◽  
Magnus Björkholm ◽  
Ingemar Turesson ◽  
Anders Wahlin ◽  
...  

Abstract Background Awareness of second malignancies in patients with multiple myeloma (MM) has been increasing during recent years. We have previously shown that second malignancies are associated with a decreased life expectancy in MM patients. Information regarding prior and second malignancies in MM is limited as these patients are often excluded from clinical trials and previously published results from other groups have been conflicting. In the present study we aimed to evaluate two hypotheses. Firstly we hypothesize that prior malignancy is a proxy for genetic instability that could be a risk factor for subsequent malignancy development in MM patients. There is limited data regarding this association in the literature and in two recent registry studies the results were inconclusive. Secondly, to further assess the clinical implication of prior malignancies in MM patients we assessed survival in these patients compared to MM patients without a history of prior malignancy. Patients and Methods All patients diagnosed with MM from January 1, 1973 to December 31, 2013 were identified from the Swedish Cancer Register. All prior and subsequent malignant diagnoses were identified through cross-linkage within the registry. A Cox regression model was used to calculate hazard ratios (HRs) and 95% confidence intervals (CIs) where prior malignancy was compared in MM patients who developed a subsequent malignancy and MM patients who did not. In another Cox regression model, survival was compared in MM patients with and without a prior malignancy. The same method was used to estimate if there was a dose-dependent relationship, i.e. if an increasing number of prior malignancies was associated with a poorer outcome. Results A total of 22,359 patients were diagnosed with MM during the study period. Of these, 2,620 (12%) patients had one or more prior malignancy diagnosis at the time of MM diagnosis and 1,243 (6%) patients developed subsequent malignancies. Among the MM patients who developed a subsequent malignancy, 148 (12%) had a prior malignancy diagnosis. Hematological malignancies were 7% of prior malignancies and 17% of subsequent malignancies. MM patients with a prior malignancy diagnosis did not have increased risk of developing a subsequent malignancy compared to MM patients without a prior malignancy (HR 1.0, 95% CI 0.9-1.2). MM patients with a prior malignancy diagnosis had a statistically significant 10% increased risk of death (HR=1.1, 95% CI 1.1-1.2, p<0.001) compared to MM patients without a prior malignancy diagnosis. MM patients with 2 or more prior malignancy diagnoses had a 20% increased risk of death (HR=1.2, 95% CI 1.1-1.4, p=0.002) compared to MM patients without a prior malignancy diagnosis (Figure). Summary and Conclusions In our large population-based study we found that prior malignancy negatively impacts survival in MM patients and that more than one prior malignancy decreases survival even further. Interestingly, a prior malignancy did not increase the risk of developing a subsequent malignancy in MM patients. We confirmed prior reports of solid tumors being more common than hematological malignancies, both prior and subsequent to the MM diagnosis. A prior malignancy was associated with a reduced survival in MM patients without being a risk factor for subsequent malignancies. The underlying explanation for this is probably multifactorial, and could include reduced dose intensity of chemotherapy, complications from treatment, or that MM that develops after another malignancy might be biologically different. Given the increase of cancer survivors in general, our findings are of importance both for the individual patients and their families as well as for the treating physician. Figure Survival in MM patients without a prior cancer diagnosis compared to MM patients with one and two or more prior cancer diagnoses Figure. Survival in MM patients without a prior cancer diagnosis compared to MM patients with one and two or more prior cancer diagnoses Disclosures Landgren: Takeda: Membership on an entity's Board of Directors or advisory committees; Merck: Membership on an entity's Board of Directors or advisory committees; Medscape: Employment, Other: Chairman for Medscape Myeloma Program; Amgen: Speakers Bureau; Celgene: Speakers Bureau; BMS: Speakers Bureau.

Blood ◽  
2018 ◽  
Vol 132 (Supplement 1) ◽  
pp. 4490-4490
Author(s):  
Sigrun Thorsteinsdottir ◽  
Ingigerdur S Sverrisdottir ◽  
Gauti Gislason ◽  
Ola Landgren ◽  
Ingemar Turesson ◽  
...  

Abstract Introduction Multiple myeloma (MM) causes lytic bone lesions, osteopenia, and fractures, which increase the morbidity of MM patients. Results from small previous studies have indicated that fractures in MM have a negative effect on survival. Aims The aim of the study was to evaluate the impact of fractures on survival in MM patients diagnosed in Sweden in the years 1990-2013. Furthermore, to analyze the effect of bone fractures at MM diagnosis on subsequent survival. Methods Patients diagnosed with MM in 1990-2013 were identified from the Swedish Cancer Registry. Information on date of birth, diagnosis, and death were collected from the Registry of Total Population. Information on all fractures were retrieved from the Swedish Patient Registry. Cox regression model was used with fractures as time-dependent variables. The effect of fractures on survival was assessed for any fracture or a subtype of fracture (a specific bone fracture or ICD-coded pathologic fracture). Either first fracture or the first subtype of fracture was used in the analysis. The effect of a fracture at MM diagnosis (within 30 days before or 30 days after MM diagnosis) on survival was also estimated using a Cox regression model. All models were adjusted for age, sex, time of diagnosis, and previous fractures. Results A total of 14,008 patients were diagnosed with MM in the study period. A total of 4,141 (29.6%) patients developed a fracture including fractures that occurred within a year before MM diagnosis and thereafter. Hereof 2,893 (20.7%) patients developed a fracture after MM diagnosis. The risk of death was significantly increased for patients that developed a fracture after the time of MM diagnosis with a hazard ratio (HR) of 2.00 (95% confidence interval (CI) 1.91-2.10) for all fractures combined. The risk of death was significantly increased for patients that developed all subtypes of fractures after MM diagnosis except ankle fractures. The risk of death was significantly increased for patients that developed pathologic fractures (HR=2.17; 95% CI 2.03-2.32), vertebral fractures (HR=1.73; 95% CI 1.61-1.87), hip fractures (HR=1.99; 95% CI 1.82-2.18), femoral fractures (HR=2.62; 95% CI 2.32-2.98), humerus fractures (HR=2.57; 95% CI 2.32-2.86), forearm fractures (HR=1.24; 95% CI 1.05-1.46), and rib fractures (HR=1.52; 95% CI 1.31-1.77), but not for ankle fractures (HR 1.07; 95% CI 0.79-1.44). A total of 942 (6.7%) of all MM patients were diagnosed with a fracture within 30 days before or 30 days after MM diagnosis. The patients with a fracture at diagnosis were at a significantly increased risk of death compared to those without (HR 1.31; 95% CI 1.21-1.41; Figure) Conclusions Our large population-based study, including over 14,000 patients diagnosed with MM in Sweden in the years 1990-2013, showed that MM patients that developed a fracture after the time of diagnosis were at twofold increased risk of dying compared to MM patients without a fracture. Furthermore, MM patients with a fracture at diagnosis had a 30% higher risk of dying compared to patients without a fracture. Our results indicate that fractures in MM reflect a more advanced disease at diagnosis and stress the importance of managing MM bone disease in all MM patients. Figure. Figure. Disclosures Landgren: Takeda: Consultancy, Membership on an entity's Board of Directors or advisory committees, Research Funding; Merck: Membership on an entity's Board of Directors or advisory committees; Karyopharm: Consultancy; Janssen: Consultancy, Membership on an entity's Board of Directors or advisory committees, Research Funding; Pfizer: Consultancy; Celgene: Consultancy, Research Funding; Amgen: Consultancy, Research Funding.


Gerontology ◽  
2021 ◽  
pp. 1-9
Author(s):  
Lee Butcher ◽  
Jose Antonio Carnicero ◽  
Karine Pérès ◽  
Marco Colpo ◽  
David Gomez Cabrero ◽  
...  

<b><i>Introduction:</i></b> The evidence that blood levels of the soluble receptor for advanced glycation end products (sRAGE) predict mortality in people with cardiovascular diseases (CVD) is inconsistent. To clarify this matter, we investigated if frailty status influences this association. <b><i>Methods:</i></b> We analysed data of 1,016 individuals (median age, 75 years) from 3 population-based European cohorts, enrolled in the FRAILOMIC project. Participants were stratified by history of CVD and frailty status. Mortality was recorded during 8 years of follow-up. <b><i>Results:</i></b> In adjusted Cox regression models, baseline serum sRAGE was positively associated with an increased risk of mortality in participants with CVD (HR 1.64, 95% CI 1.09–2.49, <i>p</i> = 0.019) but not in non-CVD. Within the CVD group, the risk of death was markedly enhanced in the frail subgroup (CVD-F, HR 1.97, 95% CI 1.18–3.29, <i>p</i> = 0.009), compared to the non-frail subgroup (CVD-NF, HR 1.50, 95% CI 0.71–3.15, <i>p</i> = 0.287). Kaplan-Meier analysis showed that the median survival time of CVD-F with high sRAGE (&#x3e;1,554 pg/mL) was 2.9 years shorter than that of CVD-F with low sRAGE, whereas no survival difference was seen for CVD-NF. Area under the ROC curve analysis demonstrated that for CVD-F, addition of sRAGE to the prediction model increased its prognostic value. <b><i>Conclusions:</i></b> Frailty status influences the relationship between sRAGE and mortality in older adults with CVD. sRAGE could be used as a prognostic marker of mortality for these individuals, particularly if they are also frail.


Blood ◽  
2019 ◽  
Vol 134 (Supplement_1) ◽  
pp. 5444-5444
Author(s):  
Sæmundur Rögnvaldsson ◽  
Ingemar Turesson ◽  
Magnus Björkholm ◽  
Ola Landgren ◽  
Sigurður Yngvi Kristinsson

Introduction Peripheral neuropathy (PN) is a common disorder that can be caused by amyloid light-chain amyloidosis (AL). AL is a rare disorder caused by the deposition of amyloid fibers, originating from malignant plasma cells. Amyloid deposition in peripheral nerves causes PN and is present in 35% of patients with newly diagnosed AL. Diagnosis of AL can be difficult, leading to under-recognition, diagnostic delay, and delayed treatment. Virtually all instances of AL are preceded by monoclonal gammopathy of undetermined significance (MGUS). MGUS is relatively common with a reported prevalence of 4.2% in the general Caucasian population over the age of 50 years. Although MGUS is usually considered asymptomatic, a significant proportion of affected individuals develop PN. However, we are not aware of any studies assessing how PN affects risk of MGUS progression to AL. We were therefore motivated to conduct a large population-based study including 15,351 Swedish individuals with MGUS diagnosed 1986-2013. Methods Participants diagnosed with MGUS between 1986-2013 were recruited from a registry of a nationwide network of hematology- and oncology centers and the Swedish Patient Registry. We then cross-linked data on recorded diagnoses of AL and PN from the Swedish Patient Registry, diagnoses of lymphoproliferative disorders form the Swedish Cancer Registry, and dates of death from the Cause of Death Registry to our study cohort. Individuals with a previous history of other lymphoproliferative disorders were excluded from the study. A multi-state survival model was created. At inclusion, participants started providing person time into the PN or the non-PN states depending on whether they had a previous diagnosis of PN. Those with MGUS who developed PN after inclusion were included into the PN state at the time of PN diagnosis and provided person time in the PN state after that. We then created a Cox proportional hazard regression model with AL as the endpoint. Participants were censored at diagnosis of other lymphoproliferative disorders. We adjusted for sex, age, and year of MGUS diagnosis. Results We included 15,351 participants with MGUS. Of those, 996 participants provided person-time with PN (6.5%). About half of those had PN at MGUS diagnosis (55%). A total of 174 cases of AL were recorded, with AL being more common among those who had PN (2.1% vs 1.0% p=0.002). Those who had PN had a 2.3-fold increased risk of AL as compared to those who did not have PN (hazard ratio (HR): 2.3; 95% confidence interval (95% CI): 1.5-3.7; p<0.001). The results were similar for those who had PN at MGUS diagnosis and those who did not. More than half of AL cases (53%) were diagnosed within one year after MGUS diagnosis. The rate was even higher among those with PN, with 82% of AL cases among those who presented with PN being diagnosed within one year after MGUS diagnosis. In the first year after inclusion, the incidence of AL was 15.2 and 6.1 per 1000 person-years for participants with and without PN respectively (HR: 1.8; 95% CI:1.0-3.4; p=0.04). Participants with PN continued to have an increased risk of progression to AL after the first year with an incidence of AL of 2.6 per 1000 person-years as compared to 1.1 per 1000 person-years among participants who did not have PN (HR:2.4; 95% CI: 1.1-5.0; p=0.02) (Figure). Discussion In this large population-based study, including 15,351 individuals with MGUS, we found that individuals with MGUS who develop PN have an increased risk of progression to AL. In fact, individuals with MGUS who have PN at MGUS diagnosis might already have AL. This risk of AL was highest during the first year after MGUS diagnosis with participants with PN having a higher risk than those who did not have PN. PN continued to be associated with a higher risk of MGUS progression to AL throughout the study period. This is the largest study that we are aware of assessing the association of PN and MGUS progression to AL. Since this is a registry-based study based on recorded diagnoses, some clinical data, including MGUS isotype, is not available. These findings suggest that increased awareness of PN as a feature of MGUS might decrease diagnostic delay and improve outcomes for patients with AL. Figure Disclosures Landgren: Takeda: Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding; Sanofi: Membership on an entity's Board of Directors or advisory committees; Amgen: Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding; Theradex: Other: IDMC; Adaptive: Honoraria, Membership on an entity's Board of Directors or advisory committees; Merck: Other: IDMC; Abbvie: Membership on an entity's Board of Directors or advisory committees; Janssen: Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding; Karyopharm: Membership on an entity's Board of Directors or advisory committees; Celgene: Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding.


Blood ◽  
2014 ◽  
Vol 124 (21) ◽  
pp. 2609-2609
Author(s):  
Aaron Rosenberg ◽  
Ann Brunson ◽  
Joseph Tuscano ◽  
Richard H. White ◽  
Ted Wun

Abstract Background: Patients (pts) with non-Hodgkins lymphoma (NHL) are at increased risk of venous thromboembolism (VTE). We and others have demonstrated increased risk of death among NHL pts with incident VTE; however, these studies were largely conducted in the pre-rituximab era. We therefore analyzed a large cohort of NHL pts in the California Cancer Registry (CCR), determined the incidence of VTE, and evaluated its effect on survival in the rituximab era. Methods: Using the CCR linked with hospital discharge and emergency department records, we identified adult NHL pts diagnosed in 2005 – 2010, excluding cases ascertained via autopsy or death certificate, and those diagnosed with acute VTE in the 2 months preceding NHL diagnosis. VTE was defined by specific ICD-9-CM codes, and Elixhauser comorbidity score, excluding lymphoma, was calculated. Cumulative incidence was calculated using the Kaplan-Meier (KM) method. Adjusted hazard ratios (aHR) of VTE and death were estimated using Cox proportional hazard models, stratified by indolent vs aggressive NHL subtype, adjusting for age, race, stage, treatment, comorbidity and prior VTE. Analyses of VTE incidence treated death as a competing risk. Cox models for death incorporated VTE as a time-dependent covariate to account for immortal time bias. Results: NHL was identified in 18,424 pts. Most (n=12,963) had aggressive NHL (1,017 mantle cell, 11,246 diffuse large B-cell or follicular grade 3, 170 lymphoblastic, 530 Burkitt), while 5,461 had indolent NHL (2,809 follicular grade 1/2, 2,652 marginal zone). Median age was 64 years (yrs) and was similar in aggressive and indolent cohorts. Men accounted for 54% (n=9926) of cases, and were more common in aggressive compared to indolent NHL (7,317 (56%) vs 2,609 (48%) respectively). Most cases (62% n=11,451) were non-Hispanic White, 4% (n=795) were African American, 21% (n=3866) Hispanic, 11% Asian (n=2013) and 1.6% unknown (n=299). The ethnic distribution was similar in aggressive and indolent NHL. Median number of reported comorbid conditions was 2. Chemotherapy was initiated in 76% (n=9791) of aggressive NHL pts and 41% (n=2250) of indolent pts. The KM cumulative incidence of first time, acute VTE in NHL pts was 4.7% (95% CI 4.4 – 5.0) and 5.3% (95% CI 4.9- 5.6) at 1 and 2 years respectively. The incidence of VTE was higher in patients with aggressive versus indolent NHL (6.5% (95% CI 6.1 - 6.9) vs 2.3% (95% CI 2.0 - 2.8) at 2 yrs respectively P<0.001), and was highest during the first 6 months after dx (Figure). In multivariable analysis of aggressive lymphoma pts, the risk of VTE was higher among pts receiving chemotherapy (Ctx) [aHR 2.3, 95% CI (1.9 – 3.0)], lower in pts with stage II NHL [aHR 0.8, 95% CI (0.6 – 1.0)] while histological subtype of aggressive NHL was not a predictor. For indolent NHL, the risk of developing acute VTE was increased among cases that received Ctx [aHR 2.3, 95% CI (1.6 – 3.4)], and cases with follicular grade 1/2 [aHR 1.6, 95% CI (1.1 – 2.3)] whereas stage was not a significant risk factor. Five year overall survival for aggressive NHL was 55% (95% CI 46 – 56) and 80% (95% CI 69 – 82) for indolent NHL. In multivariable analysis risk of incident VTE after diagnosis of NHL dx was associated with an increased risk of death (Table). Interestingly, this effect was present for only the first 2 years after dx of aggressive NHL, while the effect persisted throughout follow-up for indolent NHL. Conclusions: This large, population based study, which captured essentially all patients diagnosed with NHL in California between 2005-2010, confirms prior reports of VTE incidence in NHL patients. Pts are at highest risk early in their course, and pts undergoing chemotherapy were at increased risk. Moreover, VTE subsequent to NHL diagnosis independently increases the risk of death adjusting for other important covariates. Whereas chemoimmunotherapy has negated the effect of some previous negative prognostic factors, the adverse effect of incident VTE persists in this recent cohort. Table:Association of VTE and Death* Aggressive NHL Indolent NHLTime from NHL dx to VTEaHR95% CIaHR95% CI0 – 6 months1.411.3 – 1.62.071.4 – 3.06 – 12 months1.401.1 – 1.82.591.4 – 4.712 – 24 months1.631.3 – 2.13.201.9 – 5.4>24 months0.940.7 – 1.22.371.6 – 3.6 *Cox models adjusted for Age, Sex, Race, Stage, Treatment, Prior VTE and Comorbidity Figure 1 Figure 1. Disclosures No relevant conflicts of interest to declare.


Blood ◽  
2020 ◽  
Vol 136 (Supplement 1) ◽  
pp. 47-48
Author(s):  
Vaibhav Kumar ◽  
Ann M Brunson ◽  
Anjlee Mahajan ◽  
Nigel S. Key ◽  
Ted Wun

Background: Brain metastases are a frequently occurring and devastating complication of solid organ malignancies. Individuals with brain metastases are noted to be high risk for venous thromboembolism (VTE) due to hypercoagulability from their malignancy, immobility, and need for cancer directed therapies. The management of VTE in patients with brain metastases is challenging due to the risk of intracranial hemorrhage (ICH) with therapeutic anticoagulation. Inferior vena cava filter (IVCF) are often used to mitigate the risk of ICH, however the utility of this practice and the impact on survival is not clear. Methods: We performed a retrospective cohort study using the linked California Cancer Registry (CCR) and California Patient Discharge Database (PDD) between 2005-2017 with follow up available to 2018. We identified individuals with breast and lung cancer (because they are common), and renal cell carcinoma and melanoma (because of bleeding tendency of brain metastases) who had an incident hospitalization with VTE (either pulmonary embolism, deep vein thrombosis or both). Brain metastasis were identified using the presence of International Classification of Diseases, 9th Edition, Clinical Modification (ICD-9-CM) code 198.3 or ICD-10-CM code C79.31 present anytime in PDD and cases were classified as having brain metastases if the code was present prior to or at the time of the index VTE. Cases with multiple malignancies were excluded. ICD-9-CM code 38.7 and ICD-10-CM code 02HV was used to identify patients who received an IVCF. Univariate analysis was used to determine differences in baseline characteristics between those that did and did not receive an IVCF. A logistic regression model that included patient and index VTE hospital characteristics was used to develop a propensity score for IVCF placement. The primary outcomes were 30-day mortality and 180-day intracranial hemorrhage (ICH) determined by ICD codes. A Cox proportional hazards model, inverse propensity weighted for IVCF placement, was used to assess the effect of IVCF placement (as a time-dependent variable) on 30-day mortality. The effect of IVCF on ICH was assessed with a 1:3 propensity matched Fine-Gray model, accounting for the competing risk of death. Results: There were 17,182 patients with a diagnosis of VTE present on admission and an active first primary cancer diagnosis of interest, of these 3,309 (19.3%) had a diagnosis of brain metastasis with median follow-up of 96.8 months. The baseline characteristics of patients are summarized in Table 1. Among patients with brain metastases, 757 of 3309 (22.9%) had an IVCF inserted versus 1801 of 13873 (13.0%) in those without brain metastases (p&lt;0.001). In a multivariable logistic regression model the presence of brain metastasis was an independent predictor for the placement of IVCF (Odds Ratio (OR) 1.84 (95% CI 1.64-2.05). Using balanced (standardized mean difference less than 0.1 for all covariates included in the model) IPW-adjusted Cox regression model, the use of IVCF did not reduce the 30-day risk of death in those with acute VTE (Hazard Ratio (HR) 1.08 (95% CI 0.95-1.23). The presence of brain metastases was associated with a higher 30-day risk of death (HR 1.23 (95% CI 1.13- 1.35). Using IPW-adjusted Cox model restricted to those with brain metastasis, IVCF use was associated with a trend towards reduced 30-day risk of death (HR 0.86 (95% CI 0.73-1.01). In a propensity matched Cox regression competing risk model, the presence of brain metastases was significantly associated with an increased 180-day risk of ICH (HR 6.91 (95% CI 3.54-13.48), with no difference for those that received an IVCF (HR 1.31 (95% CI 0.85-2.01). When compared to breast cancer patients, those with lung cancer had lower risk of ICH (HR 0.28, CI 0.13-0.64), but melanoma and renal cell cancer did not have higher risk. Conclusions: This real-world retrospective population-based study demonstrated the use of IVCF was higher for patients with brain metastases among these four tumor types. There was a suggestion of reduced short-term mortality associated with IVCF placement in VTE patients and brain metastases, but this was not statistically significant. Although limited by the lack of data on anticoagulation use, there was no effect of IVCF placement on the risk of ICH. Randomized clinical trials are needed to determine the effect of IVCF on clinically relevant outcomes for VTE in patients with brain metastasis. Disclosures Key: Takeda: Research Funding; Grifols: Research Funding; Uniqure: Consultancy; Novo Nordisk: Other: Chair of Grants Committee. Wun:Glycomimetics, Inc.: Consultancy.


2021 ◽  
Vol 11 (12) ◽  
Author(s):  
Ilja Kalashnikov ◽  
Tomas Tanskanen ◽  
Janne Pitkäniemi ◽  
Nea Malila ◽  
Sirkku Jyrkkiö ◽  
...  

AbstractNodular lymphocyte predominant Hodgkin lymphoma (NLPHL) is a rare B-cell malignancy associated with excellent survival. However, some patients experience histological transformation into aggressive large B-cell lymphoma. Population-based data on transformation in patients with NLPHL is limited. We conducted a nationwide population-based study to estimate the risk of transformation and relative survival in patients diagnosed with NLPHL in Finland between 1995 and 2018. We identified a total of 453 patients (median age, 48 years; 76% males) with the incident NLPHL from the Finnish Cancer Registry. The cumulative incidence of transformation was 6.3% (95% CI, 4.2-9.6) at 10 years. After adjusting for sex, age and year of diagnosis, transformation was associated with a substantially increased risk of death (HR 8.55, 95% CI 4.49−16.3). Ten-year relative survival was 94% (95% CI, 89%‒100%). The patients diagnosed at a later calendar year had lower excess risk of death (HR, 0.38 per 10-year increase; 95% CI, 0.15‒0.98). We conclude that while the 10-year relative survival for the patients with NLPHL was excellent in this large population-based cohort for the entire study period, transformation resulted in a substantially increased mortality compared with the patients without transformation. Our results also suggest a reduction in excess mortality over time.


SLEEP ◽  
2021 ◽  
Vol 44 (Supplement_2) ◽  
pp. A207-A207
Author(s):  
Chun Yao ◽  
Sheida Zolfaghari ◽  
Paramita Saha Chaudhuri ◽  
Amelie Pelletier ◽  
Christina Wolfson ◽  
...  

Abstract Introduction To date, studies have estimated the phenoconversion rate from sleep clinics, using polysomnography proven RBD. However, no population-based estimates have been reported, testing to what degree possible RBD, screened by questionnaire is associated with increased risk of neurodegeneration. Methods We included those aged 45–85 years, living in one of 10 Canadian provinces in between 2012–2015 (at the baseline), recruited via three population-based sampling methods. Dream enactment behavior/possible RBD was screened using the RBD1Q single question-questionnaire. De-novo parkinsonism was defined as free of pre-existing diagnosis at the baseline with a ‘new’ diagnosis at the follow-up (205–2019). Relative risk (log-binomial regression), hazard ratio (Cox regression), incidence rate (Poisson regression) between the affected group and the symptom naïve group were assessed, adjusting for age and sex (and total years of education and language). Results Overall, 58 participants phenoconverted into parkinsonism and 53 into dementia at the follow-up (mean intervals=3.06±0.37 years). Participants with dream enactment behavior had 2.75 times higher risk to phenoconvert into parkinsonism than the symptom-free. Similarly, those with dream enactment behavior at the baseline possessed higher risk to screening positive of parkinsonism. No difference in time to phenoconversion was found between groups, The results remained robust after excluding non-RBD related symptoms, such as apnea and non-REM sleep parasomnia. Conclusion Compared to symptom-free, those with pRBD had higher risk to developing parkinsonism in near future. Support (if any):


2021 ◽  
Vol 39 (15_suppl) ◽  
pp. e18577-e18577
Author(s):  
Christopher Noel ◽  
Antoine Eskander ◽  
Rinku Sutradhar ◽  
Alyson Mahar ◽  
Simone Vigod ◽  
...  

e18577 Background: Psychological distress is a key construct of patient-centred cancer care. While an increased risk of suicide for cancer patients has been reported, more frequent consequences of distress after a cancer diagnosis, such as non-fatal self-injury (NFSI), remain largely unknown. We examined the risk for NFSI after a cancer diagnosis. Methods: Using linked administrative databases we identified adults diagnosed with cancer between 2007-2019. Cumulative incidence of NFSI, defined as emergency department presentation of self-injury, was computed accounting for the competing-risk of death from all causes. Factors associated with NFSI were assessed using multivariable Fine and Gray models. Results: Of 806,910 included patients, 2,482 had NFSI and 182 died by suicide. 5-year cumulative incidence of NFSI was 0.27% [95%CI 0.25-0.28%]. After adjusting for key confounders, prior severe psychiatric illness whether requiring inpatient care (sub-distribution hazard ratio (sHR) 12.6, [95% CI 10.5-15.2]) or outpatient care (sHR 7.5, 95% CI 6.48-8.84), and prior self-injury (sHR 6.6 [95% CI 5.5-8.0]) were associated with increased risk of NFSI. Young adults (age 18-39) had the highest NFSI rates, relative to individuals >70 (sHR 5.4, [95% CI 4.5-6.5]). The magnitude of association between prior severe psychiatric illness and NFSI was greatest for young adults (interaction term p < 0.01). Certain cancer subsites were also at increased risk, including head and neck (sHR1.52, [95%CI 1.19-1.93]). Conclusions: Patients with cancer have higher incidence of NFSI than suicide after diagnosis. Younger age, prior severe psychiatric illness, and prior self-injury were independently associated with NFSI. These exposures act synergistically, placing young adults with a prior mental health history at greatest risk for NFSI events. Those factors should be used to identify at-risk patients for psycho-social assessment and intervention.


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