Toluidine blue aids in detection of dysplasia and carcinoma in suspicious oral lesions

OBJECTIVES

Accurate clinical identification of 'higher-risk' oral premalignant lesions or 'higher-risk' areas within lesions is important. Assessment methods that predict their presence have great utility.

SUBJECTS AND METHODS

A cross-sectional, observational study enrolled a consecutive sample of consenting patients diagnosed with oral leukoplakia, erythroleukoplakia, or erythroplakia. Medical history, visual oral examination, ViziLite(®) examination, toluidine blue staining (TBlue(®) ), and finally a biopsy were completed in a single clinic visit. Seventy-seven of 100 examined lesions in 43 patients were biopsied. Sensitivity, specificity, and positive and negative predictive values were computed for visual examination, ViziLite(®) , and TBlue(®) using biopsy results as the gold standard.

RESULTS

The sensitivity of TBlue(®) in detecting high-risk lesions (carcinoma in situ or carcinoma) was 94 (71-100, P < 0.0003) and specificity 45 (32-58, P < 0.53), while for carcinoma, sensitivity was 100 (54-100, P < 0.032) and specificity 39 (28-52, P < 0.097). The results of ViziLite(®) testing either by itself or in combination with the information from toluidine blue testing revealed low sensitivity for the detection of high-risk lesions.

CONCLUSIONS

Clinical examination of leukoplakia, erythroplakia, or erythroleukoplakia lesions combined with toluidine blue staining may aid in the identification of severe dysplasia (carcinoma in situ) or carcinoma. This may help in determining whether, when, and where (the site within a lesion) a biopsy should be taken.

Osteoporosis Assessment Questionnaire-Physical Function (OPAQ-PF): a psychometrically validated osteoporosis-targeted patient reported outcome measure of daily activities of physical function

The purpose of this study was to evaluate the measurement properties of the Osteoporosis Assessment Questionnaire-Physical Functioning (OPAQ-PF). Based on this study, the OPAQ-PF has confirmed unidimensionality and acceptable reliability, construct validity, and sensitivity to change in a recent fracture/no recent fracture osteoporosis sample.

METHODS

Dimensionality was established through exploratory and confirmatory factor analysis. Patients completed three patient reported outcome (PRO) measures and four performance-based measures (PBMs) at baseline to enable an evaluation of construct validity. Patients without a recent fracture completed the OPAQ-PF 2 weeks after baseline to enable an evaluation of test-retest reliability. Ability to detect change and interpretation of change were investigated following completion of the OPAQ-PF 12 and 24 weeks postbaseline by patients with a recent fracture.

RESULTS

A prospective psychometric validation study in 144 postmenopausal women, with moderate to severe osteoporosis, 37 of whom had experienced a recent fragility fracture (<6 weeks). Unidimensionality was established for the OPAQ-PF by factor analysis. The OPAQ-PF had good internal consistency (α = 0.974) and test-retest reliability (mean intraclass correlation coefficient (ICC) 0.993. The OPAQ-PF differentiated between patients with/without recent fracture, and by severity of osteoarthritis; it correlated strongly with hypothesized-related scales and PBMs (r > 0.3, p < 0.001). Ability to detect change was established with high correlations between changes in OPAQ-PF score and changes in global concept scores in recent fracture patients (r ≥ 0.6, 24-week change). Effect size of change on OPAQ-PF score increased by level of global change (p < 0.001). Anchor-based methods identified an OPAQ-PF change of 10 at an individual patient level and 20 at a group level as meaningful to patients.

CONCLUSIONS

The OPAQ-PF has confirmed unidimensionality and acceptable reliability, construct validity, and sensitivity to change in a recent fracture/no recent fracture osteoporosis sample.

The clinical diagnosis of osteoporosis: a position statement from the National Bone Health Alliance Working Group

Osteoporosis causes an elevated fracture risk. We propose the continued use of T-scores as one means for diagnosis but recommend that, alternatively, hip fracture; osteopenia-associated vertebral, proximal humerus, pelvis, or some wrist fractures; or FRAX scores with ≥3% (hip) or 20% (major) 10-year fracture risk also confer an osteoporosis diagnosis.

INTRODUCTION

Osteoporosis is a common disorder of reduced bone strength that predisposes to an increased risk for fractures in older individuals. In the USA, the standard criterion for the diagnosis of osteoporosis in postmenopausal women and older men is a T-score of  ≤ -2.5 at the lumbar spine, femur neck, or total hip by bone mineral density testing.

METHODS

Under the direction of the National Bone Health Alliance, 17 clinicians and clinical scientists were appointed to a working group charged to determine the appropriate expansion of the criteria by which osteoporosis can be diagnosed.

RESULTS

The group recommends that postmenopausal women and men aged 50 years should be diagnosed with osteoporosis if they have a demonstrable elevated risk for future fractures. This includes having a T-score of less than or equal to -2.5 at the spine or hip as one method for diagnosis but also permits a diagnosis for individuals in this population who have experienced a hip fracture with or without bone mineral density (BMD) testing and for those who have osteopenia by BMD who sustain a vertebral, proximal humeral, pelvic, or, in some cases, distal forearm fracture. Finally, the term osteoporosis should be used to diagnose individuals with an elevated fracture risk based on the World Health Organization Fracture Risk Algorithm, FRAX.

CONCLUSIONS

As new ICD-10 codes become available, it is our hope that this new understanding of what osteoporosis represents will allow for an appropriate diagnosis when older individuals are recognized as being at an elevated risk for fracture.

Denosumab: a cost-effective alternative for older men with osteoporosis from a Swedish payer perspective

OBJECTIVE

To assess the cost-effectiveness of denosumab versus other treatments in men with osteoporosis who are ≥75years old from a payer perspective in Sweden.

METHODS

A lifetime cohort Markov model was developed with seven health states: well, hip fracture, vertebral fracture, other osteoporotic fracture, post-hip fracture, post-vertebral fracture, and dead. During each cycle, patients could have a fracture, remain healthy, remain in a post-fracture state or die. Background fracture risks, mortality rates, persistence rates, utilities, medical and drug costs were derived using published sources. Estimates of fracture efficacy were drawn from available studies in post-menopausal osteoporotic (PMO) women as BMD improvements have been shown to be similar across male osteoporosis (MOP) and PMO populations, and a recent clinical trial suggested that the fracture risk reduction from bisphosphonate therapy in men is similar to that seen in women in comparable studies. Lifetime expected costs and quality-adjusted life-years (QALYs) were estimated for denosumab, generic alendronate, generic risedronate, ibandronate, zoledronate, strontium ranelate and teriparatide. On average, patients in the model were 78years old, with bone mineral density T-score at the femoral neck of -2.12. Prevalent vertebral fractures were present in 23% of patients. In the base-case, the model assumed that patients would experience treatment-related effects up to 2years after discontinuation. Costs and QALYs were discounted at 3% annually. Extensive sensitivity analyses were conducted.

RESULTS

Total lifetime costs for denosumab, alendronate, strontium ranelate, zoledronate, risedronate, ibandronate and teriparatide were €31,004, €33,731, €34,788, €34,796, €34,826, €35,983 and €37,461, respectively. Total QALYs were 5.23, 5.15, 5.15, 5.17, 5.13, 5.12 and 5.22, respectively. Compared to other treatments, denosumab had the lowest costs and highest QALYs. In the one-way sensitivity analyses, when compared to alendronate (next least expensive strategy), the ICER for denosumab was most sensitive to the relative risk of hip fracture on denosumab. The probability of denosumab being cost-effective compared to the other treatments at a threshold of €66,000/QALY was 96.1%.

CONCLUSION

Denosumab dominated all comparators, including generic bisphosphonates, in the treatment of osteoporosis in men who were ≥75years old in Sweden.

Abstract T P347: Metabolomic Analysis of PFO-Related Stroke Shows Immediate and Persistent Decrease of Homocysteine Post PFO Closure

Background: PFO, an independent stroke risk factor, enables direct mixing of venous and arterial circulation. As we have found previously, PFO serves not only as a conduit for venous clots, but also enables harmful factors such as serotonin (5HT) to avoid pulmonary filtration to remain within circulation at elevated levels, potentially contributing to a prothrombotic state. We hypothesize that in addition to 5HT, other factors may also be involved. In the context of endovascular PFO closure, a bedside model to understand PFO circulatory signaling, we performed a full metabolomic profile of mediators that may respond to PFO closure.

Method: Non-migraine stroke patients were recruited in accordance with IRB approval, plasma was sampled from left and right atria pre and post closure and also from venous blood 3 months post PFO closure. A discovery metabolite screening was performed in 14 patients who underwent PFO closure, and analysis was performed using one-way ANOVA.

Result: After stringent data filtering (537 metabolites, one-way ANOVA, p-value <0.01), we identified significant changes in a panel of small molecules after PFO closure - the most prominent change being in homocysteine (HCY). While relative HCY levels (expressed as peak area) in the left atrium (LA) and right atrium (RA) were comparable pre-closure (pre-LA: 5.61 ± 0.09; pre-RA: 5.30 ± 0.48), HCY immediately decreased in LA post PFO closure (post-LA: 4.56 ± 0.04) and HCY level remained low in peripheral venous blood at 3-month follow-up (4.57 ± 0.06; p = 0.0036).

Conclusion: We found PFO closure to lower HYC immediately in left atrial (arterial) blood, and this effect persists in peripheral venous circulation at 3 months post procedure. Since high level of HYC is independently associated with stroke and heart disease, our results suggest that mechanical PFO repair may improve circulatory profile of PFO stroke patients. Studies in a larger patient cohort and validation of other important metabolites are ongoing.

Abstract T P114: Effect Endovascular Closure Procedure on the Quality of Life in Stroke Patients with Patent Foramen Ovale

Introduction: Patent foramen ovale (PFO), an opening between the left and right atria, is an independent stroke risk factor associated with more than 150,000 strokes per year in the US. PFO stroke patients tend to be younger - most are of child bearing age, enjoy an active lifestyle and are a major component of the work force, who are not long-term anticoagulant candidates. While trials are ongoing to compare closure vs medical treatment, younger stroke patients tend to prefer endovascular closure rather than long-term anticoagulation. Here we investigate the effect of PFO closure for stroke prevention on patients’ quality of life.

Methods: Patients were recruited per IRB-approved protocol from the MGH Cardio-Neurology Clinic. To quantify the effect of PFO closure on depression and anxiety, validated Becks Depression and Anxiety Inventory were performed by research nurses at 3 months before and 3-6 months after PFO closure. Clinical data on stroke severity, outcome and blood samples were also collected.

Results: 32 consecutive PFO stroke patients, adjudicated by two vascular neurologists (average age 50.75, range 22-59; 56% male) were enrolled. No new treatments (e.g. anti-depressant/anti-anxiety meds) were initiated during the study. After successful PFO closure, patients had significantly improved anxiety (3 vs 5.75, p= 0.043) and depression scores (2.58 vs 3, p= 0.05) (Figure). Cortisol level also lowered post PFO closure (data not shown due to space).

Conclusion: PFO stroke patients have improved quality of life after PFO closure as measured by validated quantitative anxiety and depression scales under the care of a team of nurses, physicians and neuropsychologist. These findings demonstrate the importance of a multi-disciplinary approach to stroke patient care, and also the effect of endovascular closure in improving the quality of life in younger stroke patients. Future studies are needed in a larger cohort with long term follow-up to validate these results.

Development of the Osteoporosis Assessment Questionnaire--physical Function (OPAQ-PF): an osteoporosis-targeted, patient-reported outcomes (PRO) measure of physical function

We have developed a short, patient-reported outcome questionnaire--the Osteoporosis Assessment Questionnaire--Physical Function (OPAQ-PF)--that assesses the impact of osteoporosis on physical function. OPAQ-PF contains 15 items in three domains (mobility, physical positions, and transfers) and has content validity in osteoporosis patients with and without a history of fracture.

INTRODUCTION

This paper describes the development of the Osteoporosis Assessment Questionnaire--Physical Function (OPAQ-PF), a patient-reported outcome (PRO) questionnaire based on OPAQ v.2.0 (60 items, 14 domains) that assesses the impact of osteoporosis on physical function.

METHODS

OPAQ v.2.0 was administered to patients with osteoporosis. Item response theory methodology and clinical judgment were used to retain/eliminate items. The resulting instrument was modified during two sets of concept elicitation and cognitive debriefing interviews with osteoporosis patients.

RESULTS

Item response theory-based analysis of OPAQ v.2.0 (n = 1,478) coupled with clinician input resulted in the generation of a 21-item, six-domain instrument with a frequency response format. Interview data from 32 participants were used to modify this version and led to generation of the final instrument, OPAQ-PF. This final version has a severity response format and contains 15 items in three domains (mobility, physical positions, and transfers) that group together to provide an overall assessment of physical function in patients with osteoporosis. Twenty-two of the 32 interview participants (69 %) had previously sustained a fracture. Symptoms occurred primarily in these patients.

CONCLUSIONS

OPAQ-PF represents a brief, focused, PRO instrument that assesses physical function in patients with osteoporosis, specifically related to mobility, physical positions, and transfers. This questionnaire has content validity in osteoporosis patients who have, and have not, sustained a prior fracture.

Long-term fracture rates seen with continued ibandronate treatment: pooled analysis of DIVA and MOBILE long-term extension studies

Ibandronate reduces the risk of vertebral and non-vertebral fractures versus placebo in postmenopausal women with osteoporosis. This analysis, in which fractures were reported as safety events, showed that long-term use of ibandronate was associated with low fracture rates over 5 years of treatment.

INTRODUCTION

A previous post-hoc meta-analysis of 2-3 year studies found that ibandronate regimens with annual cumulative exposure (ACE) of ≥10.8 mg reduced the risk of vertebral and nonvertebral fractures (NVFs) versus placebo in postmenopausal women. This post-hoc analysis used individual patient data from the 2-year monthly oral ibandronate in ladies (MOBILE) and dosing intravenous administration (DIVA) studies, including the 3-year long-term extensions (LTEs), to assess fracture risk in patients treated with ibandronate for 5 years.

METHODS

Patients treated for 2 years in MOBILE with monthly oral ibandronate 150 mg (n = 176) and in DIVA with IV ibandronate every 2 months 2 mg (n = 253) or quarterly 3 mg (n = 263) who continued on the same regimens for 3 additional years in the LTEs were included. Three-year placebo data (n = 1,924) were obtained from the ibandronate osteoporosis vertebral fracture trial in North America and Europe (BONE) and IV Fracture Prevention trials. The primary endpoint was clinical fracture rate; clinical fracture data were collected as adverse events. Time to fracture was analyzed using Kaplan-Meier and statistical analysis was conducted using the log-rank test. All clinical fractures included all NVFs and symptomatic vertebral fractures.

RESULTS

For ibandronate regimens with ACE ≥10.8 mg, time to fracture was significantly longer for all clinical fractures, NVFs, and clinical vertebral fractures versus placebo (P = 0.005). For all fracture types, the rate of fracture appeared stable during the 5-year treatment period.

CONCLUSION

In women with postmenopausal osteoporosis, continuous treatment with ibandronate over 5 years results in low sustained clinical fracture rate.

Disease-specific perception of fracture risk and incident fracture rates: GLOW cohort study

Accurate patient risk perception of adverse health events promotes greater autonomy over, and motivation towards, health-related lifestyles.

INTRODUCTION

We compared self-perceived fracture risk and 3-year incident fracture rates in postmenopausal women with a range of morbidities in the Global Longitudinal study of Osteoporosis in Women (GLOW).

METHODS

GLOW is an international cohort study involving 723 physician practices across ten countries (Europe, North America, Australasia); 60,393 women aged ≥55 years completed baseline questionnaires detailing medical history and self-perceived fracture risk. Annual follow-up determined self-reported incident fractures.

RESULTS

In total 2,945/43,832 (6.8%) sustained an incident fracture over 3 years. All morbidities were associated with increased fracture rates, particularly Parkinson's disease (hazard ratio [HR]; 95% confidence interval [CI], 3.89; 2.78-5.44), multiple sclerosis (2.70; 1.90-3.83), cerebrovascular events (2.02; 1.67-2.46), and rheumatoid arthritis (2.15; 1.53-3.04) (all p < 0.001). Most individuals perceived their fracture risk as similar to (46%) or lower than (36%) women of the same age. While increased self-perceived fracture risk was strongly associated with incident fracture rates, only 29% experiencing a fracture perceived their risk as increased. Under-appreciation of fracture risk occurred for all morbidities, including neurological disease, where women with low self-perceived fracture risk had a fracture HR 2.39 (CI 1.74-3.29) compared with women without morbidities.

CONCLUSIONS

Postmenopausal women with morbidities tend to under-appreciate their risk, including in the context of neurological diseases, where fracture rates were highest in this cohort. This has important implications for health education, particularly among women with Parkinson's disease, multiple sclerosis, or cerebrovascular disease.

An evaluation of the Fracture Risk Assessment Tool (FRAX®) as an indicator of treatment efficacy: the effects of bazedoxifene and raloxifene on vertebral, nonvertebral, and all clinical fractures as a function of baseline fracture risk assessed by FRAX®

SUMMARY

The relationship between baseline Fracture Risk Assessment Tool (FRAX®) and treatment efficacy was evaluated using data from a pivotal phase 3 study. Relative risk of vertebral, nonvertebral, and all clinical fractures decreased with increasing probability of fracture for bazedoxifene (BZA) versus placebo but remained generally constant for raloxifene (RLX).

INTRODUCTION

To determine whether the FRAX® predicts osteoporosis treatment efficacy, we evaluated reductions in fracture incidence associated with BZA and RLX according to baseline fracture risk determined by FRAX® using data from a phase 3 osteoporosis treatment study.

METHODS

Hazard ratios (HRs) for effects of BZA and RLX versus placebo on incidence of vertebral, nonvertebral, and all clinical fractures were calculated using a Cox regression model. Cox regression analyses were performed in subgroups at or above 10-year fracture probability thresholds determined by FRAX®.

RESULTS

HRs for the risk of vertebral, nonvertebral, and all clinical fractures versus placebo decreased with increasing 10-year fracture probability for BZA, while those for RLX remained stable. In all 10-year fracture probability subgroups, all BZA doses significantly reduced vertebral fracture risk versus placebo (HR = 0.22-0.66). BZA at 20, 40, and 20/40 mg significantly reduced risk of nonvertebral fractures (HR = 0.45, 0.44, and 0.45, respectively) and all clinical fractures (HR = 0.38, 0.41, and 0.40, respectively) for ≥20.0 % fracture probability. Vertebral fracture risk reductions for RLX 60 mg versus placebo were significant in subgroups at lower fracture probabilities (≥2.5- ≥ 10.0 %), but not higher (≥12.5 %), and in no subgroups for nonvertebral or all clinical fractures.

CONCLUSION

The antifracture efficacy of BZA increased with increasing baseline FRAX® score, but there was no clear relationship between RLX and baseline FRAX®. These findings provide independent confirmation of current literature, suggesting that the relationship between FRAX® and treatment efficacy varies for different agents.

Primary non-adherence to bisphosphonates in an integrated healthcare setting

We estimated primary non-adherence to oral bisphosphonate medication and examined the factors associated with primary non-adherence. Nearly 30% of women did not pick up their new bisphosphonate within 60 days. Identifying barriers and developing interventions that address patients' needs and concerns at the time a new medication is prescribed are warranted.

INTRODUCTION

To estimate primary non-adherence to oral bisphosphonate medications using electronic medical record data in a large, integrated healthcare delivery system and to describe patient and prescribing provider factors associated with primary non-adherence.

METHODS

Women aged 55 years and older enrolled in Kaiser Permanente Southern California (KPSC) with a new prescription for oral bisphosphonates between December 1, 2009 and March 31, 2011 were identified. Primary non-adherence was defined as failure to pick up the new prescription within 60 days of the order date. Multivariable logistic regression models were used to investigate patient factors (demographics, healthcare utilization, and health conditions) and prescribing provider characteristics (demographics, years in practice, and specialty) associated with primary non-adherence.

RESULTS

We identified 8,454 eligible women with a new bisphosphonate order. Among these women, 2,497 (29.5%) did not pick up their bisphosphonate prescription within 60 days of the order date. In multivariable analyses, older age and emergency department utilization were associated with increased odds of primary non-adherence while prescription medication use and hospitalizations were associated with lower odds of primary non-adherence. Prescribing providers practicing 10 or more years had lower odds of primary non-adherent patients compared with providers practicing less than 10 years. Internal medicine and rheumatology providers had lower odds of primary non-adherent patients than primary care providers.

CONCLUSION

This study found that nearly one in three women failed to pick up their new bisphosphonate prescription within 60 days. Identifying barriers and developing interventions aimed at reducing the number of primary non-adherent patients to bisphosphonate prescriptions are warranted.

The Direct Assessment of Nonvertebral Fractures in Community Experience (DANCE) study: 2-year nonvertebral fragility fracture results

This observational study evaluated the occurrence of nonvertebral fragility fractures (NVFX) in over 4,000 men and women with osteoporosis treated with teriparatide (TPTD). The incidence of new NVFX decreased for patients receiving TPTD treatment for greater than 6 months. No new significant safety findings were observed in this large trial.

INTRODUCTION

The Direct Assessment of Nonvertebral Fractures in Community Experience (DANCE) study evaluated the occurrence of NVFX in patients receiving TPTD for osteoporosis in a real-world setting.

METHODS

DANCE is a multicenter, prospective, observational trial that examined the long-term effectiveness of TPTD in men and women with osteoporosis whom study physicians judged to be suitable for TPTD therapy. Patients received 20 μg TPTD per day by subcutaneous injection for up to 24 months and were followed for 24 months after treatment cessation. The incidence of patients experiencing a new NVFX, defined as a fracture associated with low trauma, was evaluated during four 6-month periods in both the treatment and cessation phases with >0 to ≤6 months serving as the reference. We also observed the spectrum and occurrence of serious adverse events.

RESULTS

Of the 4,167 patients enrolled, 4,085 took one or more doses of TPTD (safety population); 3,720 were included in the efficacy analysis. The incidence of patients experiencing a NVFX was 1.42, 0.91, 0.70, and 0.81 % for the four treatment periods, respectively, and 0.80, 0.68, 0.33, and 0.33 % for the four periods after treatment cessation. Differences for each period were statistically significant compared with the reference period (first 6-month interval, each p < 0.05). No new significant safety findings were observed.

CONCLUSIONS

In this study, the incidence of NVFX decreased for patients receiving TPTD for all three treatment periods >6 months compared to 0 to ≤6 months, and this trend persisted throughout the cessation phase. TPTD was generally well tolerated.

Patient weighting of osteoporosis medication attributes across racial and ethnic groups: a study of osteoporosis medication preferences using conjoint analysis

We studied the ranking of osteoporosis (OP) medication attributes in a convenience sample of four different racial/ethnic groups in the United States. Our study showed that postmenopausal women differ in the ranking of OP medication attributes based on age, educational level, income, and prior fracture history.

INTRODUCTION

Decision making about OP medication-related behavior relies heavily on patient preferences about specific medication attributes. Patients may decide to initiate, change, or stop therapies based on ranking of perceived attributes of the therapy and their personal attitudes toward those attributes. We used MaxDiff, a form of conjoint analysis (Ryan and Farrar 2000), to explore patient weighting of attributes across four racial/ethnic groups at two sites in the United States and defined four critical attributes that influence such decisions (safety, efficacy, cost, and convenience) from qualitative interviews.

METHODS

We recruited a sample of 367 Postmenopausal (PM) women at risk of OP fractures from four racial/ethnic groups: Caucasian (n = 100), African American (n = 100), Asian American (n = 82), and Hispanic American (n = 85). Respondents completed a laptop-based questionnaire that included demographic items, several short scales on medical care preference and OP patient perceptions, and a MaxDiff procedure that determines comparative ranking of attributes either as least important or most important to their decisions.

RESULTS

MaxDiff analyses were done to evaluate the relative weight of specific statements for each participant and to determine whether racial/ethnic groups differed across dimensions. Overall, participants in all four groups rated efficacy > safety > cost > convenience.

CONCLUSIONS

Although there were no significant differences among the racial/ethnic groups on overall ranking of attributes, subgroup analyses revealed significant impact of age, education, income, and prior fracture on these decisions. The findings from this study suggest that postmenopausal women differ in their ranking of OP medication attributes, and healthcare providers must account for personal preferences in their communication about and selection of OP medications.

The International Costs and Utilities Related to Osteoporotic Fractures Study (ICUROS)--quality of life during the first 4 months after fracture

The quality of life during the first 4 months after fracture was estimated in 2,808 fractured patients from 11 countries. Analysis showed that there were significant differences in the quality of life (QoL) loss between countries. Other factors such as QoL prior fracture and hospitalisation also had a significant impact on the QoL loss.

INTRODUCTION

The International Costs and Utilities Related to Osteoporotic Fractures Study (ICUROS) was initiated in 2007 with the objective of estimating costs and quality of life related to fractures in several countries worldwide. The ICUROS is ongoing and enrols patients in 11 countries (Australia, Austria, Estonia, France, Italy, Lithuania, Mexico, Russia, Spain, UK and the USA). The objective of this paper is to outline the study design of ICUROS and present results regarding the QoL (measured using the EQ-5D) during the first 4 months after fracture based on the patients that have been thus far enrolled ICUROS.

METHODS

ICUROS uses a prospective study design where data (costs and quality of life) are collected in four phases over 18 months after fracture. All countries use the same core case report forms. Quality of life was collected using the EQ-5D instrument and a time trade-off questionnaire.

RESULTS

The total sample for the analysis was 2,808 patients (1,273 hip, 987 distal forearm and 548 vertebral fracture). For all fracture types and countries, the QoL was reduced significantly after fracture compared to pre-fracture QoL. A regression analysis showed that there were significant differences in the QoL loss between countries. Also, a higher level of QoL prior to the fracture significantly increased the QoL loss and patients who were hospitalised for their fracture also had a significantly higher loss compared to those who were not.

CONCLUSIONS

The findings in this study indicate that there appear to be important variations in the QoL decrements related to fracture between countries.

Abstract TP430: Plasma Proteomic Changes Persist in Long Term Follow-up of Patent Foramen Ovale Related Stroke Patients after PFO Closure

Introduction: Paradoxical embolism from patent foramen ovale (PFO), a heterogeneous multi-organ condition involving brain, lung, heart and blood, lacks consensus for treatment options due to variability among individual patients. Clinical proteomic approaches may be promising for such complex diseases, where the disease process can be monitored in clinically accessible fluid such as blood. Here, we apply a pharmaco-proteomic approach to study PFO endovascular closure, an intervention that requires better risk stratification and monitoring of therapeutic efficacy to individualize treatment. Previously, we found that plasma small molecule signals such as serotonin, TSP-1 and microparticles -- which may avoid pulmonary filtration via PFO -- decrease immediately in the systemic circulation after effective PFO closure. Now we study the long-term effect of PFO endovascular closure.

Methods/Results: To reduce confounders in an inherently complex system, the most robust clinical proteomic comparisons are those of profiles taken over time from the same individual. Accordingly, in consecutively recruited patients who underwent PFO closure (n=37), we analyze venous blood obtained prior to closure and in long-term followup (1-3 yrs) post closure. None of the subjects experienced recurrent TIA or strokes. More than 1 year post closure, plasma protein profiles -- in addition to the persistent decrease in small molecules such as serotonin -- continue to show a statistically significant (p<0.05) decrease of coagulation markers such as fibrinogen, fibrinogen fragments, D-dimer and others. Moreover, markers of inflammatory changes such as hsCRP, apolipoproteins and various immunoglobulins also remain decreased.

Conclusion: A pharmaco-proteomic approach is clinically feasible and may help to monitor therapeutic efficacy, improve patient selection, and ensure more precise clinical phenotyping for clinical trials in PFO-related stroke. More than 1 year post PFO closure, relevant inflammatory and coagulation factors remain lowered after adjusting for other confounders such as medication changes. Further studies are needed to explore the utility of proteomic profiling to help individualize treatment in PFO-related strokes.

Non-hip, non-spine fractures drive healthcare utilization following a fracture: the Global Longitudinal Study of Osteoporosis in Women (GLOW)

We evaluated healthcare utilization associated with treating fracture types in >51,000 women aged ≥55 years. Over the course of 1 year, there were five times more non-hip, non-spine fractures than hip or spine fractures, resulting in twice as many days of hospitalization and rehabilitation/nursing home care for non-hip, non-spine fractures.

INTRODUCTION

The purpose of this study is to evaluate medical healthcare utilization associated with treating several types of fractures in women ≥55 years from various geographic regions.

METHODS

Information from the Global Longitudinal Study of Osteoporosis in Women (GLOW) was collected via self-administered patient questionnaires at baseline and year 1 (n = 51,491). Self-reported clinically recognized low-trauma fractures at year 1 were classified as incident spine, hip, wrist/hand, arm/shoulder, pelvis, rib, leg, and other fractures. Healthcare utilization data were self-reported and included whether the fracture was treated at a doctor's office/clinic or at a hospital. Patients were asked if they had undergone surgery or been treated at a rehabilitation center or nursing home.

RESULTS

During 1-year follow-up, there were 195 spine, 134 hip, and 1,654 non-hip, non-spine fractures. Clinical vertebral fractures resulted in 617 days of hospitalization and 512 days of rehabilitation/nursing home care; hip fractures accounted for 1,306 days of hospitalization and 1,650 days of rehabilitation/nursing home care. Non-hip, non-spine fractures resulted in 3,805 days in hospital and 5,186 days of rehabilitation/nursing home care.

CONCLUSIONS

While hip and vertebral fractures are well recognized for their associated increase in health resource utilization, non-hip, non-spine fractures, by virtue of their 5-fold greater number, require significantly more healthcare resources.

Burden of non-hip, non-vertebral fractures on quality of life in postmenopausal women: the Global Longitudinal study of Osteoporosis in Women (GLOW)

Among 50,461 postmenopausal women, 1,822 fractures occurred (57% minor non-hip, non-vertebral [NHNV], 26% major NHNV, 10% spine, 7% hip) over 1 year. Spine fractures had the greatest detrimental effect on EQ-5D, followed by major NHNV and hip fractures. Decreases in physical function and health status were greatest for spine or hip fractures.

INTRODUCTION

There is growing evidence that NHNV fractures result in substantial morbidity and healthcare costs. The aim of this prospective study was to assess the effect of these NHNV fractures on quality of life.

METHODS

We analyzed the 1-year incidences of hip, spine, major NHNV (pelvis/leg, shoulder/arm) and minor NHNV (wrist/hand, ankle/foot, rib/clavicle) fractures among women from the Global Longitudinal study of Osteoporosis in Women (GLOW). Health-related quality of life (HRQL) was analyzed using the EuroQol EQ-5D tool and the SF-36 health survey.

RESULTS

Among 50,461 women analyzed, there were 1,822 fractures (57% minor NHNV, 26% major NHNV, 10% spine, 7% hip) over 1 year. Spine fractures had the greatest detrimental effect on EQ-5D summary scores, followed by major NHNV and hip fractures. The number of women with mobility problems increased most for those with major NHNV and spine fractures (both +8%); spine fractures were associated with the largest increases in problems with self care (+11%), activities (+14%), and pain/discomfort (+12%). Decreases in physical function and health status were greatest for those with spine or hip fractures. Multivariable modeling found that EQ-5D reduction was greatest for spine fractures, followed by hip and major/minor NHNV. Statistically significant reductions in SF-36 physical function were found for spine fractures, and were borderline significant for major NHNV fractures.

CONCLUSION

This prospective study shows that NHNV fractures have a detrimental effect on HRQL. Efforts to optimize the care of osteoporosis patients should include the prevention of NHNV fractures.

National Bone Health Alliance Bone Turnover Marker Project: current practices and the need for US harmonization, standardization, and common reference ranges

This position paper reviews how the National Bone Health Alliance (NBHA) will execute a project to help assure health professionals of the clinical utility of bone turnover markers; the current clinical approaches concerning osteoporosis and the status and use of bone turnover markers in the USA; the rationale for focusing this effort around two specific bone turnover markers; the need to standardize bone marker sample collection procedures, reference ranges, and bone turnover marker assays in clinical laboratories; and the importance of harmonization for future research of bone turnover markers.

INTRODUCTION

Osteoporosis is a major global health problem, with the prevalence and incidence of osteoporosis for at-risk populations estimated to be 44 million Americans. The potential of bone markers as an additional tool for health care professionals to improve patient outcomes and impact morbidity and mortality is crucial in providing better health care and addressing rising health care costs. This need to advance the field of bone turnover markers has been recognized by a number of organizations, including the International Osteoporosis Foundation (IOF), National Osteoporosis Foundation, International Federation of Clinical Chemistry, and Laboratory Medicine (IFCC), and the NBHA.

METHODS

This position paper elucidates how this project will standardize bone turnover marker sample collection procedures in the USA, establish a USA reference range for one bone formation (serum procollagen type I N propeptide, s-PINP) and one bone resorption (serum C-terminal telopeptide of type I collagen, s-CTX) marker, and standardize bone turnover marker assays used in clinical laboratories. This effort will allow clinicians from the USA to have confidence in their use of bone turnover markers to help monitor osteoporosis treatment and assess future fracture risk. This project builds on the recommendations of the IOF/IFCC Bone Marker Standards Working Group by developing USA reference standards for s-PINP and s-CTX, the markers identified as most promising for use as reference markers.

RESULTS

The goals of this project will be realized through the NBHA and will include its governmental, academic, for-profit, and non-profit sector stakeholders as well as major academic and commercial laboratories. Upon completion, a parallel effort will be pursued to make bone turnover marker measurements reliable and accepted by all health care professionals for facilitating treatment decisions and ultimately be reimbursed by all health insurance payers.

CONCLUSIONS

Successful completion of this project will help assure health professionals from the USA of the clinical utility of bone turnover markers and ties in with the parallel effort of the IOF/IFCC to develop worldwide bone turnover reference ranges.

A framework for the development of guidelines for the management of glucocorticoid-induced osteoporosis

This paper provides a framework for the development of national guidelines for the management of glucocorticoid-induced osteoporosis in men and women aged 18 years and over in whom oral glucocorticoid therapy is considered for 3 months or longer.

INTRODUCTION

The need for updated guidelines for Europe and other parts of the world was recognised by the International Osteoporosis Foundation and the European Calcified Tissue Society, which set up a joint Guideline Working Group at the end of 2010.

METHODS AND RESULTS

The epidemiology of GIO is reviewed. Assessment of risk used a fracture probability-based approach, and intervention thresholds were based on 10-year probabilities using FRAX. The efficacy of intervention was assessed by a systematic review.

CONCLUSIONS

Guidance for glucocorticoid-induced osteoporosis is updated in the light of new treatments and methods of assessment. National guidelines derived from this resource need to be tailored within the national healthcare framework of each country.

Regional and age-related variations in the proportions of hip fractures and major fractures among postmenopausal women: the Global Longitudinal Study of Osteoporosis in Women

We examined variations in proportions of hip fractures and major fractures among postmenopausal women using the Global Longitudinal Study of Osteoporosis in Women (GLOW). The proportion of major fractures that were hip fractures varied with age and region, whereas variations in the proportion of fractures that were major fractures appeared modest.

INTRODUCTION

In many countries, the World Health Organization fracture risk assessment tool calculates the probability of major fractures by assuming a uniform age-associated proportion of major fractures that are hip fractures in different countries. We further explored this assumption, using data from the GLOW.

METHODS

GLOW is an observational population-based study of 60,393 non-institutionalized women aged ≥55 years who had visited practices within the previous 2 years. Main outcome measures were self-reported prevalent fractures after the age of 45 years and incident fractures during the 2 years of follow-up.

RESULTS

The adjusted proportion of prevalent and incident major fractures after the age of 45 years that were hip fractures was higher in North America (16%, 17%) than in northern (13%, 12%) and southern Europe (10%, 10%), respectively. The proportion of incident major fractures that were hip fractures increased more than five-fold with age, from 6.6% among 55-59-year-olds to 34% among those aged ≥85 years. Regional and age-associated variations in the proportion of all incident fractures that were major fractures were less marked, not exceeding 16% and 28%, respectively.

CONCLUSIONS

The data suggest that there may be regional differences in the proportion of major fractures that are hip fractures in postmenopausal women. In contrast, the regional and age-related variations in the proportion of fractures that are major fractures appear to be modest. However, because of the limited number of fractures in our sample, further studies are necessary to confirm these findings.