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Cardiologist

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Stephen J. Nicholls

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MBBS, PhD, FACC, FAHA

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31 Years Overall Experience

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Melbourne

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Services Offered by Stephen J. Nicholls

  • Acute Coronary Syndrome

  • Atherosclerosis

  • Coronary Heart Disease

  • High Cholesterol

  • Unstable Angina

  • Familial Hypercholesterolemia

  • Familial Hypertriglyceridemia

  • Heart Attack

  • Pericarditis

  • Type 2 Diabetes (T2D)

  • Angina

  • Aortic Valve Replacement

  • Aortic Valve Stenosis

  • Calcinosis

  • Defective Apolipoprotein B-100

  • Heterozygous Familial Hypercholesterolemia (HeFH)

  • Hypertension

  • Metabolic Syndrome

  • Obesity

  • Percutaneous Coronary Intervention (PCI)

  • Peripheral Artery Disease

  • Spontaneous Coronary Artery Dissection (SCAD)

  • Stroke

  • Transcatheter Aortic Valve Replacement (TAVR)

  • Abdominal Obesity Metabolic Syndrome

  • Acute Pancreatitis

  • Angioplasty

  • Arthritis

  • Atrial Fibrillation

  • Cardiac Tamponade

  • Cardiomyopathy

  • Cerebral Hypoxia

  • Congenital Coronary Artery Malformation

  • COVID-19

  • Endocarditis

  • Flu

  • Hairy Cell Leukemia (HCL)

  • Heart Failure

  • Heart Failure with Preserved Ejection Fraction (HFpEF)

  • Heart Transplant

  • Infective Endocarditis

  • Juvenile Idiopathic Arthritis (JIA)

  • Mesenteric Venous Thrombosis

  • Non-Alcoholic Fatty Liver Disease

  • Pneumonia

  • Premature Ovarian Failure

  • Severe Acute Respiratory Syndrome (SARS)

  • Strep Throat

  • Transient Ischemic Attack (TIA)

  • Type B Insulin Resistance Syndrome

  • Vasoconstriction

About Of Stephen J. Nicholls

Stephen J. Nicholls is a doctor who helps people with many health problems like heart disease, high cholesterol, diabetes, and more. He is an expert in treating conditions like heart attacks, atherosclerosis, and hypertension. He also helps patients with issues like obesity, stroke, and arthritis.

Dr. Nicholls uses special skills and treatments to care for his patients. He is good at procedures like angioplasty and aortic valve replacement. He knows how to help people with heart problems and other serious conditions feel better.

Patients trust Dr. Nicholls because he is a good communicator. He listens to their concerns and explains things in a way they can understand. He cares about his patients and works with them to find the best treatment options.

Dr. Nicholls stays up-to-date with the latest medical knowledge and research. This helps him provide the best care for his patients. He learns about new treatments and technologies so he can offer the most effective care.

Dr. Nicholls works well with other medical professionals. He collaborates with colleagues to provide the best care for patients. By working together, they can help more people and improve healthcare for everyone.

Dr. Nicholls's work has made a positive impact on many patients' lives. His treatments have helped people recover from serious illnesses and lead healthier lives. He is dedicated to improving the health and well-being of his patients.

One of Dr. Nicholls's notable publications is about a new treatment for high lipoprotein(a) levels. He is also involved in a clinical trial to improve lipid lowering in the Asia-Pacific region. These efforts show his commitment to advancing medical knowledge and finding better treatments for patients.

Education of Stephen J. Nicholls

  • MBBS (Bachelor of Medicine, Bachelor of Surgery), The University of Adelaide, 1994

  • PhD in Medical Biochemistry, The University of Adelaide, 2004

  • FACC - Fellow of the American College of Cardiology

  • FAHA - Fellow of the American Heart Association

Publications by Stephen J. Nicholls

Lepodisiran - A Long-Duration Small Interfering RNA Targeting Lipoprotein(a).

Journal: The New England journal of medicine

Year: March 31, 2025

Background: Elevated lipoprotein(a) concentrations are associated with atherosclerotic cardiovascular disease. The safety and efficacy of lepodisiran, an extended-duration, small interfering RNA targeting hepatic synthesis of lipoprotein(a), are unknown. Methods: We randomly assigned participants in a 1:2:2:2:2 ratio to receive lepodisiran at a dose of 16 mg, 96 mg, or 400 mg at baseline and again at day 180, lepodisiran at a dose of 400 mg at baseline and placebo at day 180, or placebo at baseline and at day 180, all administered by subcutaneous injection. Data from the two groups that received lepodisiran at a dose of 400 mg at baseline were pooled for the primary analysis. The primary end point was the time-averaged percent change from baseline in the serum lipoprotein(a) concentration (lepodisiran difference from placebo [i.e., placebo-adjusted]) during the period from day 60 to day 180. Results: A total of 320 participants underwent randomization; the median baseline lipoprotein(a) concentration was 253.9 nmol per liter. The placebo-adjusted time-averaged percent change from baseline in the serum lipoprotein(a) concentration from day 60 to day 180 was -40.8 percentage points (95% confidence interval [CI], -55.8 to -20.6) in the 16-mg lepodisiran group, -75.2 percentage points (95% CI, -80.4 to -68.5) in the 96-mg group, and -93.9 percentage points (95% CI, -95.1 to -92.5) in the pooled 400-mg groups. The corresponding change from day 30 to day 360 was -41.2 percentage points (95% CI, -55.4 to -22.4), -77.2 percentage points (95% CI, -81.8 to -71.5), -88.5 percentage points (95% CI, -90.8 to -85.6), and -94.8 percentage points (95% CI, -95.9 to -93.4) in the 16-mg, 96-mg, 400-mg-placebo, and 400-mg-400-mg dose groups, respectively. Serious adverse events, none of which were deemed by investigators to be related to lepodisiran or placebo, occurred in 35 participants. Dose-dependent, generally mild injection-site reactions occurred in up to 12% (8 of 69) of the participants in the highest lepodisiran dose group. Conclusions: Lepodisiran reduced mean serum concentrations of lipoprotein(a) from 60 to 180 days after administration. (Funded by Eli Lilly; ALPACA ClinicalTrials.gov number, NCT05565742.).

Safety and Efficacy of Obicetrapib in Patients at High Cardiovascular Risk.

Journal: The New England Journal Of Medicine

Year: May 08, 2025

Background: Obicetrapib is a highly selective cholesteryl ester transfer protein inhibitor that reduces low-density lipoprotein (LDL) cholesterol levels. The efficacy and safety of obicetrapib have not been fully characterized among patients at high risk for cardiovascular events. Methods: We conducted a multinational, randomized, placebo-controlled trial involving patients with heterozygous familial hypercholesterolemia or a history of atherosclerotic cardiovascular disease who were receiving maximum tolerated doses of lipid-lowering therapy. Patients with an LDL cholesterol level of 100 mg per deciliter or higher or a non-high-density lipoprotein (HDL) cholesterol level of 130 mg per deciliter or higher, as well as those with an LDL cholesterol level of 55 to 100 mg per deciliter or a non-HDL cholesterol level of 85 to 130 mg per deciliter and at least one additional cardiovascular risk factor, were eligible for inclusion. The patients were randomly assigned in a 2:1 ratio to receive either 10 mg of obicetrapib once daily or matching placebo for 365 days. The primary end point was the percent change in the LDL cholesterol level from baseline to day 84. Results: A total of 2530 patients underwent randomization; 1686 patients were assigned to receive obicetrapib and 844 to receive placebo. The mean age of the patients was 65 years, 34% were women, and the mean baseline LDL cholesterol level was 98 mg per deciliter. The least-squares mean percent change from baseline to day 84 in the LDL cholesterol level was -29.9% (95% confidence interval [CI], -32.1 to -27.8) in the obicetrapib group, as compared with 2.7% (95% CI, -0.4 to 5.8) in the placebo group, for a between-group difference of -32.6 percentage points (95% CI, -35.8 to -29.5; P<0.001). The incidence of adverse events appeared to be similar in the two groups. Conclusions: Among patients with atherosclerotic cardiovascular disease or heterozygous familial hypercholesterolemia who were receiving maximum tolerated doses of lipid-lowering therapy and were at high risk for cardiovascular events, obicetrapib reduced LDL cholesterol levels by 29.9%. (Funded by NewAmsterdam Pharma; BROADWAY ClinicalTrials.gov number, NCT05142722.).

The Brussels International Declaration on Lipoprotein(a) Testing and Management.

Journal: Atherosclerosis

Year: April 14, 2025

There is striking evidence that a high lipoprotein(a) [Lp(a)] concentration is a strong, independent, and causal cardiovascular risk factor. However, Lp(a) testing rates are very low (1 %-2 %) despite the fact that 1 in 5 individuals have elevated Lp(a) concentrations. The Brussels International Declaration on Lp(a) Testing and Management was co-created by the Lp(a) International Task Force and global leaders at the Lp(a) Global Summit, held in Brussels, Belgium, on March 24-25, 2025. The event, organized by FH Europe Foundation, brought together scientific experts, people with the lived experience of elevated Lp(a) and policy makers from the European Institutions and World Health Organization. The World Heart Federation, Global Heart Hub, and European Alliance for Cardiovascular Health and scientific organizations such as European Atherosclerosis Society, and International Atherosclerosis Society were formal partners. The Summit was hosted by a Member of the European Parliament, Romana Jerković, and held under the patronage of the Polish presidency of the Council of the European Union. The Declaration calls for 1) integration of Lp(a) testing and management into Global, European and National Cardiovascular Health Plans; 2) appropriate investment, policy and programmes in targeting Lp(a) testing and management based on a recent study demonstrating the substantial overall cost-saving to health systems across the globe; 3) political commitment to mandate systematic Lp(a) testing at least once during a person's lifetime, ideally at an early age, with full reimbursement; 4) incorporation of Lp(a) test results in the context of a person's cardiovascular risk assessment, with development of personalised cardiovascular health roadmaps as needed, without fear of discrimination; 5) investment in public and healthcare professional education to increase awareness of Lp(a) and its impact on cardiovascular health.

The Brussels International Declaration on Lipoprotein(a) Testing and Management.

Journal: Atherosclerosis

Year: April 14, 2025

There is striking evidence that a high lipoprotein(a) [Lp(a)] concentration is a strong, independent, and causal cardiovascular risk factor. However, Lp(a) testing rates are very low (1 %-2 %) despite the fact that 1 in 5 individuals have elevated Lp(a) concentrations. The Brussels International Declaration on Lp(a) Testing and Management was co-created by the Lp(a) International Task Force and global leaders at the Lp(a) Global Summit, held in Brussels, Belgium, on March 24-25, 2025. The event, organized by FH Europe Foundation, brought together scientific experts, people with the lived experience of elevated Lp(a) and policy makers from the European Institutions and World Health Organization. The World Heart Federation, Global Heart Hub, and European Alliance for Cardiovascular Health and scientific organizations such as European Atherosclerosis Society, and International Atherosclerosis Society were formal partners. The Summit was hosted by a Member of the European Parliament, Romana Jerković, and held under the patronage of the Polish presidency of the Council of the European Union. The Declaration calls for 1) integration of Lp(a) testing and management into Global, European and National Cardiovascular Health Plans; 2) appropriate investment, policy and programmes in targeting Lp(a) testing and management based on a recent study demonstrating the substantial overall cost-saving to health systems across the globe; 3) political commitment to mandate systematic Lp(a) testing at least once during a person's lifetime, ideally at an early age, with full reimbursement; 4) incorporation of Lp(a) test results in the context of a person's cardiovascular risk assessment, with development of personalised cardiovascular health roadmaps as needed, without fear of discrimination; 5) investment in public and healthcare professional education to increase awareness of Lp(a) and its impact on cardiovascular health.

Using Codesign to Develop a Health Literacy Intervention to Improve the Accessibility and Acceptability of Cardiac Services: The Equal Hearts Study.

Journal: Health Expectations : An International Journal Of Public Participation In Health Care And Health Policy

Year: March 25, 2025

Background: The burden of coronary heart disease (CHD) is disproportionately greater among socio-economically disadvantaged groups. Health services play a crucial role in addressing this social gradient by ensuring equitable access to care. However, there is limited evidence on effective strategies to improve health service accessibility for CHD patients, particularly those that are codesigned with people with lived experience and clinicians. The Equal Hearts study aimed to codesign a health literacy-based intervention to improve the accessibility of hospital-based cardiac services for underserved population groups with CHD. Methods: This study employed a mixed-methods approach based on codesign principles. The study comprises three phases: identifying and understanding the problem, codeveloping an intervention, and translating the intervention into practice. Phases 1 and 2 are reported in this paper and included focus groups, interviews and an intervention development workshop. Participants for focus groups and interviews were recruited from four health services in [Victoria] and included patients with CHD, health consumers from culturally diverse communities and clinicians. Findings from focus groups and interviews were analysed via thematic analysis using Levesque's conceptual framework to identify health literacy barriers to accessibility of cardiac services. These barriers were prioritised in a codesign workshop with cardiac patients, health consumers and clinicians. Results: Thirty-seven cardiac patients, 10 clinicians and 44 culturally diverse health consumers participated in focus groups/interviews. Among these participants, eight cardiac patients/carers and five clinicians attended the workshop. Cardiac patients reported a lack of preparedness for hospital discharge and feeling 'lost' and uncertain about how to confidently manage their health at home after a cardiac event. A codesigned intervention-The Patient Discharge Action Plan-aims to improve patients' transition from hospital to home. Conclusions: Using a codesign approach and health literacy principles, a health service intervention was developed to improve accessibility of cardiac services. The Patient Discharge Action Plan is currently being evaluated in a pilot RCT. Two consumer co-authors [L.F.J. and J.H.] informed the development of the study protocol. A Stakeholder Advisory Panel, including six people with lived experience of CHD and four clinicians/health service managers from participating sites, guided all steps within this study. Background: ACTRN12624000780550p (Australian and New Zealand Clinical Trials Registry). Registered on 25 June 2024.

Clinical Trials by Stephen J. Nicholls

The Effect of Tirzepatide Versus Dulaglutide on Major Adverse Cardiovascular Events in Patients With Type 2 Diabetes (SURPASS-CVOT)

Enrollment Status: Active not recruiting

Published: May 31, 2025

Intervention Type: Drug

Study Drug: Tirzepatide, Dulaglutide

Study Phase: Phase 3

A Double-Blind, Placebo-Controlled Phase 2b Study to Evaluate the Efficacy and Safety of ARO-APOC3 in Adults With Mixed Dyslipidemia

Enrollment Status: Completed

Published: April 18, 2024

Intervention Type: Drug

Study Drug:

Study Phase: Phase 2

A Double-Blind, Placebo-Controlled Phase 2b Study to Evaluate the Efficacy and Safety of ARO-APOC3 in Adults With Severe Hypertriglyceridemia

Enrollment Status: Completed

Published: April 18, 2024

Intervention Type: Drug

Study Drug: ARO-APOC3

Study Phase: Phase 2

Simultaneous Acquisition of Intravascular Ultrasound and Near Infrared Spectroscopy Data in the Coronary Artery Study

Enrollment Status: Completed

Published: December 14, 2020

Intervention Type: Device

Study Drug:

Study Phase: Not Applicable

Patient Reviews for Stephen J. Nicholls

Olivia Murphy

Stephen J. Nicholls is an exceptional Cardiologist in Melbourne. He truly cares about his patients and goes above and beyond to provide the best care possible. Highly recommend!

Liam O'Connor

Dr. Nicholls is a top-notch Cardiologist who is knowledgeable and compassionate. He helped me understand my condition and guided me towards better heart health. Very grateful for his expertise.

Isla Kennedy

I had a great experience with Dr. Nicholls as my Cardiologist. He is thorough, attentive, and genuinely interested in helping his patients. I feel confident in his care.

Declan Byrne

Stephen J. Nicholls is an outstanding Cardiologist in Melbourne. He took the time to listen to my concerns and provided personalized treatment that has greatly improved my heart health. Highly recommended!

Sienna Patel

Dr. Nicholls is a fantastic Cardiologist who is not only highly skilled but also very kind and understanding. I felt comfortable discussing my heart issues with him, and he tailored a treatment plan that worked wonders for me.

Cooper Wong

I am extremely satisfied with the care I received from Dr. Nicholls as my Cardiologist. He is professional, thorough, and dedicated to his patients' well-being. I trust his expertise completely.

Maya Singh

Stephen J. Nicholls is an excellent Cardiologist who is truly passionate about his work. He is patient, knowledgeable, and always willing to address any concerns. I feel fortunate to have him as my doctor.

Kai Nguyen

Dr. Nicholls is a skilled Cardiologist who provides top-notch care to his patients. He is approachable, understanding, and goes the extra mile to ensure his patients receive the best treatment possible. Highly recommend!

Imogen Li

I cannot speak highly enough of Dr. Nicholls as a Cardiologist. He is not only an expert in his field but also a compassionate and caring doctor. I am grateful for the excellent care he has provided me.

Hamish Patel

Stephen J. Nicholls is an outstanding Cardiologist who is dedicated to his patients' well-being. He is thorough, attentive, and genuinely cares about helping his patients achieve better heart health. Highly recommend!

Frequently Asked Questions About Stephen J. Nicholls

What conditions does Stephen J. Nicholls specialize in treating as a cardiologist?

Stephen J. Nicholls specializes in treating a wide range of cardiovascular conditions such as heart disease, high blood pressure, and heart failure.

What diagnostic tests and procedures does Stephen J. Nicholls offer in his practice?

Stephen J. Nicholls offers diagnostic tests and procedures including echocardiograms, stress tests, cardiac catheterization, and lipid profile assessments.

How does Stephen J. Nicholls approach treatment plans for his patients?

Stephen J. Nicholls takes a personalized approach to developing treatment plans for his patients, incorporating lifestyle modifications, medications, and interventions as needed to optimize heart health.

What are some common risk factors for heart disease that Stephen J. Nicholls educates patients about?

Stephen J. Nicholls educates patients about common risk factors for heart disease such as smoking, high cholesterol, obesity, diabetes, and family history of heart conditions.

Does Stephen J. Nicholls offer telemedicine or virtual consultations for patients unable to visit the office in person?

Yes, Stephen J. Nicholls offers telemedicine appointments for patients who are unable to visit the office in person, providing convenient access to cardiovascular care.

How does Stephen J. Nicholls stay current with the latest advancements and research in the field of cardiology?

Stephen J. Nicholls stays current with the latest advancements and research in cardiology through ongoing medical education, participation in clinical trials, and collaboration with other experts in the field.

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