Cardiovascular Risk in Myositis Patients Compared to the General Population: Preliminary Data From a Single-Center Cross-Sectional Study

Integrating carotid Doppler, greyscale US, and aortic oscillometry to evaluate macroangiopathy in myositides: the MYOCARD cohort

OBJECTIVES

To evaluate the combination of novel colour Doppler US (CDUS), greyscale US (GSUS), and oscillometric indices of macroangiopathy in patients with idiopathic inflammatory myopathies (IIM). Second, to explore the associations between these imaging markers and both patient-related and disease-related characteristics, as well as traditional cardiovascular (CV) risk factors.

METHODS

We conducted CDUS to evaluate arterial compliance markers, specifically the resistance (RI) and pulsatility (PI) indices, both in the common (CCA) and internal carotid arteries (ICA) of patients with IIM and healthy controls. Additionally, we performed GSUS examinations to measure carotid intima-media thickness (cIMT), identify plaques, and quantify cumulative carotid calcification surface. Oscillometric assessments determined aortic stiffness using carotid-femoral pulse wave velocity (cfPWV).

RESULTS

We recruited 82 IIM patients and 88 healthy controls. Patients showed significantly higher cIMT (Padj = 0.032), CCA-RI (Padj = 0.015), CCA-PI (Padj = 0.013), ICA-RI (Padj = 0.012), and ICA-PI (Padj = 0.039), compared with controls. RI and PI of CCA and ICA were higher in patients with lower lung function vital capacity, respectively (all Ps < 0.05). cfPWV correlated positively with traditional CV risk factors including age (ρ = 0.546, P < 0.001), mean arterial pressure (ρ = 0.331, P = 0.003), diabetes (P = 0.007), and hyperlipidaemia (P = 0.032), and associated negatively with lung carbon monoxide (CO) diffusion (ρ = -0.329, P = 0.031).

CONCLUSION

In one of the largest CV surrogate marker studies in IIM, patients exhibited increased carotid pulsatility, resistance, and atherosclerosis compared with controls. Lower lung function parameters predicted aortic stiffness and Doppler indices, suggesting a possible link between lung involvement and increased CV risk. Angiopathy markers may reveal significant vascular abnormalities in IIM patients, enhancing CV screening and risk classification.

Cardiovascular events in patients with myositis: results from a French retrospective cohort

INTRODUCTION

Idiopathic inflammatory myositis (IIM) are systemic diseases, including dermatomyositis (DM), inclusion body myositis (IBM), immune-mediated necrotising myopathy (IMNM), antisynthetase syndrome (ASSD) and overlap myositis (OM). Patients with IIM have an increased risk of premature death, largely due to cardiovascular events (CVE). The aim of this study was to describe specific and non-specific cardiac involvement in patients with IIM, and to assess the occurrence of CVE.

METHODS

We conducted a retrospective observational cohort study of patients with IIM from Saint Antoine University Hospital, Paris, between 1997 and 2020. Cardiac involvement was defined as abnormalities at baseline on ECG, Holter ECG, transthoracic echocardiography, cardiac MRI or elevated cardiac biomarkers. CVE were defined as heart failure due to ischaemia, arrhythmia or conductive block, inflammatory myocarditis or resuscitation department admission.

RESULTS

78 patients were included (median age 49 years; 67% female); 33 (42%) had DM, 18 (23%) ASSD, 12 (15%) OM, 11 (14%) IMNM and 4 (5%) IBM. Cardiac involvement at diagnosis was present in 12 (15%) patients; 15 (19%) had a CVE during follow-up. Patients with versus without cardiac involvement at diagnosis were more likely to present a CVE (6 (50%) vs 9 (14%); p=0.01). Median (IQR) time to CVE was shorter in patients with cardiac involvement (9 (0-34) vs 84 (26-156) months; p<0.01).

CONCLUSION

Patients with cardiac involvement at myositis diagnosis are at increased risk of CVE and experience them earlier than patients without and should be carefully followed up, particularly during the first months after diagnosis.

Patient reported physical function, mental health, and treatment patterns in dermatomyositis: survey results from a cross-sectional study of adult dermatomyositis patients

OBJECTIVES

Dermatomyositis (DM) is a rare and progressive immune-mediated disease with no cure and significant patient burden that encompasses physical, mental, and financial impacts. Patients experience debilitating symptoms that may include muscle weakness, itchy and painful rash, joint pain, and fatigue. Despite the heterogeneity of the disease and the breadth of possible symptoms, the impact of DM on a diverse range of patients' quality of life (QoL) has not been well-characterized in literature. The aim of this study was to describe the experiences of patients living with DM as they relate to physical and mental impacts, productivity, and treatment patterns and satisfaction.

METHODS

To address this deficiency, a 60-question survey was developed to capture adult patient perspectives on the impact of DM on their QoL. Members of The Myositis Association (TMA) with a self-reported diagnosis of DM who were 18-75 years old and whose disease duration was ≥ 1 year were invited to complete the online survey.

RESULTS

Respondents were predominantly female (88%, 172/195), white (82%, 160/195), and had a median age of 57 years. Approximately 50% (98/195) of the respondents rated their overall symptoms as moderate and the three most bothersome symptoms were muscle weakness (44%, 86/195), fatigue (43%, 84/195), and muscle pain (30%, 59/195). Almost all respondents (83%, 162/195) experienced some form of mental stress due to DM and reported that this had a negative impact on interpersonal relationships. The majority (87%, 170/195) of respondents were less than satisfied with the level of support they received for DM.

CONCLUSIONS

Our study demonstrates the significant burden of DM on a patients' QoL and there remains a large unmet need for financial support, mental health care, and improved treatment options for patients living with DM.

Findings on serial thigh MRI can identify individuals with inflammatory myositis who recover sub-optimally: A 6-month follow-up study

BACKGROUND

Magnetic resonance imaging (MRI) of the thigh is used in diagnosis of idiopathic inflammatory myositis (IIM) diagnosis due to its high sensitivity in detecting muscle oedema and to localize the site for muscle biopsy. At the same time, dual energy absorptiometry (DXA) is an accepted method in clinical practice to measure muscle mass and change in body composition. In this longitudinal study of patients with active IIM we sought to correlate muscle findings on serial thigh MRI and body composition assessed using DXA with six-month clinical outcomes, we also studied correlation of thigh MRI scores with body composition parameters.

METHODS

A single-centre prospective study involving 20 active IIM patients. Clinical outcomes, muscle enzymes, MRI of the thigh scores and body composition were periodically assessed over 6 months.

RESULTS

Muscle oedema score significantly decreased from baseline (median 17.7) to 3 months (0.7) and 6 months (0) (p < 0.001). Fatty infiltration increased significantly from baseline (8.8) to 3 months (13.3; p < 0.001) and remained stable. Muscle atrophy score did not change significantly from baseline to 3 or 3 to 6 months. Body composition indices showed significant changes over 6 months, with increases in both lean mass indices and adiposity measures (p < 0.05). Muscle oedema score significantly correlated with manual muscle testing-8 (MMT-8) at baseline (r = -0.64). At 6 months MMT-8 showed a significant negative correlation with muscle atrophy (r = -0.562) and fatty infiltration (r = -0.478) but not with muscle oedema. Multivariate regression model revealed muscle oedema scores at 3 months (p = 0.03) and baseline muscle atrophy (p = 0.02) as significant predictors of MMT-8 at 6 months.

CONCLUSION

Thigh MRI correlated with clinical outcomes both cross-sectionally and longitudinally. Higher baseline muscle atrophy and fatty infiltration, and higher muscle oedema at 3 months predict suboptimal clinical outcomes at 6 months. Intramuscular fatty infiltration scores on thigh MRI did not correlate with lower limb fat indices but correlated with overall fat indices on DXA scan.

Cardiovascular risk in myositis patients compared with the general population

OBJECTIVES

We aimed to evaluate cardiovascular (CV) risk in patients with idiopathic inflammatory myopathies (IIM) compared with healthy controls (HC) and to assess its association with disease-specific features.

METHODS

Ninety IIM patients and 180 age-/sex-matched HC were included. Subjects with a history of CV disease (angina pectoris, myocardial infarction and cerebrovascular/peripheral arterial vascular events) were excluded. All participants were prospectively recruited and underwent examinations of carotid intima-media thickness (CIMT), pulse wave velocity (PWV), ankle-brachial index (ABI), and body composition. The risk of fatal CV events was evaluated by the Systematic COronary Risk Evaluation (SCORE) and its modifications.

RESULTS

Compared with HC, IIM patients had a significantly higher prevalence of traditional CV risk factors, carotid artery disease (CARD), abnormal ABI and PWV. After propensity score matching (using traditional CV risk factors), the prevalence of CARD and pathological PWV remained significantly higher in IIM than HC. No significant difference in SCORE was observed. The most unfavourable CV risk profile was observed in patients with necrotizing myopathy, especially in statin-induced anti-HMGCR+ patients. The calculated CV risk scores by SCORE, SCORE2 and SCORE multiplied by the coefficient 1.5 (mSCORE) were reclassified according to CIMT and the presence of carotid plaques. SCORE was demonstrated to be most inaccurate in predicting CV risk in IIM. Age, disease activity, lipid profile, body composition parameters and blood pressure were the most significant predictors of CV risk in IIM patients.

CONCLUSION

Significantly higher prevalence of traditional risk factors and subclinical atherosclerosis was observed in IIM patients compared with HC.

YKL-40 serum levels are predicted by inflammatory state, age and diagnosis of idiopathic inflammatory myopathies

YKL-40 increase according to the aging process, and its functions have been associated with tissue remodeling and systemic inflammation. In Rheumatoid Arthritis (RA) it has been proposed as a possible biomarker of activity and severity, however; in the field of idiopathic inflammatory myopathies (IIM) the role of YKL-40 in IIM is not clear. Thus, we aimed to evaluate if there is an association between the serum levels and muscle tissue expression of YKL-40 with age, IIM phenotype, muscle strength and myositis disease activity. The main finding was that age is the most important variable that affects the YKL-40 serum levels. In muscle biopsy, we observed that YKL-40 is mainly expressed in infiltrating lymphoid cells than in muscle tissue. Using ANCOVA according to the b-coefficients, YKL-40 serum levels are predicted by inflammatory state, age, and IIM diagnosis.

Assessment of cardiovascular risk factors in patients with idiopathic inflammatory myopathies: a systematic review

We performed a systematic review of cardiovascular risk factors in idiopathic inflammatory myopathies (IIMs) and their cardiovascular outcomes, including acute coronary syndrome and stroke. A qualitative systematic review was conducted from January 1956 to December 2022 according to the PRISMA protocol using three electronic databases: PubMed, Web of Science, and Scopus. The studies were analyzed based on the following eligibility criteria: at least one combination of the terms described in the search strategy appeared in the title, written in English, Portuguese, or Spanish, and addressed risk factors for cardiovascular diseases in IIMs. Brief reports, reviews, papers addressing juvenile IIMs, congress proceedings, monographs, and dissertations were excluded. Twenty articles were included. According to the literature, most patients with IIMs are middle-aged North American or Asian women, with dyslipidemia and hypertension. The prevalence of the cardiovascular risk factors was generally low in IIMs, but with a high incidence of acute myocardial infarction. Further theoretical and prospective studies are needed to define the actual impact of each variable (e.g., hypertension, diabetes, smoking, alcoholism, obesity, and dyslipidemia) on the cardiovascular risk of patients with IIMs.

Cardiovascular manifestations in idiopathic inflammatory myopathies

Cardiovascular involvement in idiopathic inflammatory myopathies (IIM) is an understudied area which is gaining increasing recognition in recent times. Recent advances in imaging modalities and biomarkers have allowed the detection of subclinical cardiovascular manifestations in IIM. However, despite the availability of these tools, the diagnostic challenges and underestimated prevalence of cardiovascular involvement in these patients remain significant. Notably, cardiovascular involvement remains one of the leading causes of mortality in patients with IIM. In this narrative literature review, we outline the prevalence and characteristics of cardiovascular involvement in IIM. Additionally, we explore investigational modalities for early detection of cardiovascular involvement, as well as newer approaches in screening to facilitate timely management. Key points • Cardiac involvement in IIM in majority cases is subclinical and a major cause of mortality. • Cardiac magnetic resonance imaging is sensitive for detection of subclinical cardiac involvement.