Heterozygous Familial HypercholesterolemiaFHLPANCT02976818
Lp(a) and Aortic Valve Calcification
An observational study of Heterozygous Familial Hypercholesterolemia, run by Laval University at 1 site in Canada.
Trial summary
Aortic valve stenosis (AVS), the most common form of valve disease in the western world, afflicts more than 1 million individuals in North America [1] and the burden of AVS is high and is expected to double within the next 50 years [2]. Read more about this study
- Who is it for?
- Ages 18 to 80 years
- Conditions the study is for
- Heterozygous Familial Hypercholesterolemia
- How many people
- 173 participants
- Where
- 1 siteCanada
- Study dates
- 30 Apr 2017to 19 Feb 2020
- Phase
- Observational
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 80 years
- All sexes
- No healthy volunteers
- Adult, Older adult
Study population: primary care clinic
Who may be able to join
- Men or women with heterozygous FH aged between 18 and 80 years
- FH patient carrying a documented mutation in the LDL receptor gene
- Subjects must be willing to give written informed consent and able to adhere to visit schedule
Who cannot join
- Men or women < 18 or > 80 years
- Non-FH subjects
- History of alcohol or drug abuse within the past 2 years
- Subjects who are in a situation or have any condition that, in the opinion of the investigator, may interfere with optimal participation in the study
Trial locations and contacts
1 site in 1 country.
Canada1 site
Institute of Nutrition and Functional Foods (INAF)
Québec, Quebec, G1V 0A6
About this study
Official title: Relationships Between Lipoprotein(a) Levels and Aortic Valve Calcification in Patients With Heterozygous Familial Hypercholesterolemia
Aortic valve stenosis (AVS), the most common form of valve disease in the western world, afflicts more than 1 million individuals in North America [1] and the burden of AVS is high and is expected to double within the next 50 years [2]. Medical therapy to prevent development or reduce progression of AVS is currently not available and the only effective treatment for AVS is aortic valve replacement, for which costs have been estimated up to 120,000$ [3,4]. Recently, we and others have identified rs10455872 at the LPA locus as a susceptibility single nucleotide polymorphism (SNP) for aortic valve calcification (AVC) and AVS [5,6] and rs10455872 is associated with elevated plasma lipoprotein (Lp)(a) levels [7]. Lp(a) is a LDL-like particle consisting of hepatically synthesized apolipoprotein B-100 that is noncovalently bound to the plasminogen-like glycoprotein apolipoprotein(a) [8]. Lp(a) promotes atherosclerotic stenosis, and possibly thrombosis, and has been hypothesized to contribute to wound healing, each of which could explain an association with AVS [9,10]. Lp(a) is relatively refractory to both lifestyle and drug intervention, with only nicotinic acid and monoclonal antibody inhibition of the proprotein convertase subtilisin/kexin type 9 that have showed reductions in Lp(a) levels [11,12]. However, the evidence that patients with AVS could be characterized by high Lp(a) levels is scarce. Glader et al. [13] showed that plasma levels of Lp(a) were almost 1.5-fold higher in 101 patients with AVS compared to matched controls, although this relationship did not reach statistical significance. Subsequent studies have also reported an association between elevated plasma Lp(a) levels and higher prevalence of AVS. More specifically, Kamstrup and colleagues [14] reported that elevated Lp(a) levels and corresponding genotypes were associated with increased risk of AVS in the general population with levels >90 mg/dL predicting a threefold increased risk. We have measured Lp(a) and oxidized phospholipids plasma levels in 220 patients with mild-to-moderate calcific AVS enrolled in the Aortic Stenosis Progression Observation: Measuring Effects of Rosuvastatin (ASTRONOMER) trial [15]. Results of this study suggest that high Lp(a) and oxidized phospholipids both predict calcific AVS progression, especially in younger patients with calcific AVS. We also found that statin therapy considerably increased both Lp(a) and oxidized phospholipids levels. Whether the fact that statins increase these risk factors for calcific AVS might explain at least to a certain extent why statins failed to promote calcific AVS regression or stabilization in at least four trials, including ASTRONOMER.
Familial hypercholesterolemia (FH) is an autosomal codominant single-gene disorder caused by mutations in the LDL receptor gene that disrupt normal clearance of LDL. Phenotypic features characteristic of the disease's heterozygous form are 2- to 3-fold raise in plasma LDL-cholesterol concentrations, tendinous xanthomatosis and premature atherosclerotic coronary artery disease. High Lp(a) levels have been shown to explain residual cardiovascular disease risk in FH [16,17]. Recent studies have demonstrated that FH heterozygotes have elevated AVC compared with non-FH subjects [18] and that Lp(a) levels were positively correlated with AVC in asymptomatic FH heterozygotes [19]. Vongpromek et al. [19] demonstrated that plasma Lp(a) concentration is a independent risk factor for AVC in a cohort of 129 asymptomatic heterozygous FH patients aged between 40 and 69 years. In this study, AVC was significantly associated with plasma Lp(a) level, age, body mass index, blood pressure, duration of statin use, cholesterol-year score and coronary artery calcification (CAC) score.
What is being measured
The primary outcome is the main question the study is designed to answer.
Association between Lp(a) concentrations and aortic valve calcification
Measured: Week 1
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted29 Nov 2016 (estimated)
- Study start30 Apr 2017
- Primary completion31 Oct 2019
- Study completion19 Feb 2020
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (19)Papers the sponsor has linked to this study.
- Other trials for Heterozygous Familial HypercholesterolemiaStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Case-control
- Time perspective
- Cross-sectional
- Enrolment
- 173 participants (actual)
Sponsor and investigators
- Lead sponsor
- Laval University
- Sponsor type
- University, hospital or other
- Collaborators
- Amgen
- Responsible party
- Principal investigator, Patrick Couture, Laval University
- Investigators
- Patrick Couture, MD, FRCP, PhD, Principal investigator, Laval University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT02976818
- Sponsor's protocol ID
- ISS 20167474
- Acronym
- FHLPA
- Status last verified
- Feb 2020
- First submitted
- 25 Nov 2016
- Last updated
- 21 Feb 2020
- Results posted
- No
- Data monitoring committee
- No
- Individual data sharing
- No
Publications
Iung B, Vahanian A. Degenerative calcific aortic stenosis: a natural history. Heart. 2012 Nov;98 Suppl 4:iv7-13. doi: 10.1136/heartjnl-2012-302395.
PubMed 23143128Nishimura RA, Otto CM, Bonow RO, Carabello BA, Erwin JP 3rd, Guyton RA, O'Gara PT, Ruiz CE, Skubas NJ, Sorajja P, Sundt TM 3rd, Thomas JD; American College of Cardiology/American Heart Association Task Force on Practice Guidelines. 2014 AHA/ACC guideline for the management of patients with valvular heart disease: executive summary: a report of the American College of Cardiology/American Heart Association Task Force on Practice Guidelines. J Am Coll Cardiol. 2014 Jun 10;63(22):2438-88. doi: 10.1016/j.jacc.2014.02.537. Epub 2014 Mar 3. No abstract available.
PubMed 24603192Utermann G. The mysteries of lipoprotein(a). Science. 1989 Nov 17;246(4932):904-10. doi: 10.1126/science.2530631.
PubMed 2530631Nkomo VT, Gardin JM, Skelton TN, Gottdiener JS, Scott CG, Enriquez-Sarano M. Burden of valvular heart diseases: a population-based study. Lancet. 2006 Sep 16;368(9540):1005-11. doi: 10.1016/S0140-6736(06)69208-8.
PubMed 16980116Rosamond W, Flegal K, Friday G, Furie K, Go A, Greenlund K, Haase N, Ho M, Howard V, Kissela B, Kittner S, Lloyd-Jones D, McDermott M, Meigs J, Moy C, Nichol G, O'Donnell CJ, Roger V, Rumsfeld J, Sorlie P, Steinberger J, Thom T, Wasserthiel-Smoller S, Hong Y; American Heart Association Statistics Committee and Stroke Statistics Subcommittee. Heart disease and stroke statistics--2007 update: a report from the American Heart Association Statistics Committee and Stroke Statistics Subcommittee. Circulation. 2007 Feb 6;115(5):e69-171. doi: 10.1161/CIRCULATIONAHA.106.179918. Epub 2006 Dec 28. No abstract available.
PubMed 17194875Thanassoulis G, Campbell CY, Owens DS, Smith JG, Smith AV, Peloso GM, Kerr KF, Pechlivanis S, Budoff MJ, Harris TB, Malhotra R, O'Brien KD, Kamstrup PR, Nordestgaard BG, Tybjaerg-Hansen A, Allison MA, Aspelund T, Criqui MH, Heckbert SR, Hwang SJ, Liu Y, Sjogren M, van der Pals J, Kalsch H, Muhleisen TW, Nothen MM, Cupples LA, Caslake M, Di Angelantonio E, Danesh J, Rotter JI, Sigurdsson S, Wong Q, Erbel R, Kathiresan S, Melander O, Gudnason V, O'Donnell CJ, Post WS; CHARGE Extracoronary Calcium Working Group. Genetic associations with valvular calcification and aortic stenosis. N Engl J Med. 2013 Feb 7;368(6):503-12. doi: 10.1056/NEJMoa1109034.
PubMed 23388002Arsenault BJ, Boekholdt SM, Dube MP, Rheaume E, Wareham NJ, Khaw KT, Sandhu MS, Tardif JC. Lipoprotein(a) levels, genotype, and incident aortic valve stenosis: a prospective Mendelian randomization study and replication in a case-control cohort. Circ Cardiovasc Genet. 2014 Jun;7(3):304-10. doi: 10.1161/CIRCGENETICS.113.000400. Epub 2014 Apr 5.
PubMed 24704946Clarke R, Peden JF, Hopewell JC, Kyriakou T, Goel A, Heath SC, Parish S, Barlera S, Franzosi MG, Rust S, Bennett D, Silveira A, Malarstig A, Green FR, Lathrop M, Gigante B, Leander K, de Faire U, Seedorf U, Hamsten A, Collins R, Watkins H, Farrall M; PROCARDIS Consortium. Genetic variants associated with Lp(a) lipoprotein level and coronary disease. N Engl J Med. 2009 Dec 24;361(26):2518-28. doi: 10.1056/NEJMoa0902604.
PubMed 20032323Helgadottir A, Gretarsdottir S, Thorleifsson G, Holm H, Patel RS, Gudnason T, Jones GT, van Rij AM, Eapen DJ, Baas AF, Tregouet DA, Morange PE, Emmerich J, Lindblad B, Gottsater A, Kiemeny LA, Lindholt JS, Sakalihasan N, Ferrell RE, Carey DJ, Elmore JR, Tsao PS, Grarup N, Jorgensen T, Witte DR, Hansen T, Pedersen O, Pola R, Gaetani E, Magnadottir HB, Wijmenga C, Tromp G, Ronkainen A, Ruigrok YM, Blankensteijn JD, Mueller T, Wells PS, Corral J, Soria JM, Souto JC, Peden JF, Jalilzadeh S, Mayosi BM, Keavney B, Strawbridge RJ, Sabater-Lleal M, Gertow K, Baldassarre D, Nyyssonen K, Rauramaa R, Smit AJ, Mannarino E, Giral P, Tremoli E, de Faire U, Humphries SE, Hamsten A, Haraldsdottir V, Olafsson I, Magnusson MK, Samani NJ, Levey AI, Markus HS, Kostulas K, Dichgans M, Berger K, Kuhlenbaumer G, Ringelstein EB, Stoll M, Seedorf U, Rothwell PM, Powell JT, Kuivaniemi H, Onundarson PT, Valdimarsson E, Matthiasson SE, Gudbjartsson DF, Thorgeirsson G, Quyyumi AA, Watkins H, Farrall M, Thorsteinsdottir U, Stefansson K. Apolipoprotein(a) genetic sequence variants associated with systemic atherosclerosis and coronary atherosclerotic burden but not with venous thromboembolism. J Am Coll Cardiol. 2012 Aug 21;60(8):722-9. doi: 10.1016/j.jacc.2012.01.078.
PubMed 22898070Yano Y, Shimokawa K, Okada Y, Noma A. Immunolocalization of lipoprotein(a) in wounded tissues. J Histochem Cytochem. 1997 Apr;45(4):559-68. doi: 10.1177/002215549704500408.
PubMed 9111234AIM-HIGH Investigators; Boden WE, Probstfield JL, Anderson T, Chaitman BR, Desvignes-Nickens P, Koprowicz K, McBride R, Teo K, Weintraub W. Niacin in patients with low HDL cholesterol levels receiving intensive statin therapy. N Engl J Med. 2011 Dec 15;365(24):2255-67. doi: 10.1056/NEJMoa1107579. Epub 2011 Nov 15.
PubMed 22085343Raal F, Scott R, Somaratne R, Bridges I, Li G, Wasserman SM, Stein EA. Low-density lipoprotein cholesterol-lowering effects of AMG 145, a monoclonal antibody to proprotein convertase subtilisin/kexin type 9 serine protease in patients with heterozygous familial hypercholesterolemia: the Reduction of LDL-C with PCSK9 Inhibition in Heterozygous Familial Hypercholesterolemia Disorder (RUTHERFORD) randomized trial. Circulation. 2012 Nov 13;126(20):2408-17. doi: 10.1161/CIRCULATIONAHA.112.144055. Epub 2012 Nov 5.
PubMed 23129602Glader CA, Birgander LS, Soderberg S, Ildgruben HP, Saikku P, Waldenstrom A, Dahlen GH. Lipoprotein(a), Chlamydia pneumoniae, leptin and tissue plasminogen activator as risk markers for valvular aortic stenosis. Eur Heart J. 2003 Jan;24(2):198-208. doi: 10.1016/s0195-668x(02)00385-8.
PubMed 12573277Kamstrup PR, Tybjaerg-Hansen A, Nordestgaard BG. Elevated lipoprotein(a) and risk of aortic valve stenosis in the general population. J Am Coll Cardiol. 2014 Feb 11;63(5):470-7. doi: 10.1016/j.jacc.2013.09.038. Epub 2013 Oct 23.
PubMed 24161338Capoulade R, Chan KL, Yeang C, Mathieu P, Bosse Y, Dumesnil JG, Tam JW, Teo KK, Mahmut A, Yang X, Witztum JL, Arsenault BJ, Despres JP, Pibarot P, Tsimikas S. Oxidized Phospholipids, Lipoprotein(a), and Progression of Calcific Aortic Valve Stenosis. J Am Coll Cardiol. 2015 Sep 15;66(11):1236-1246. doi: 10.1016/j.jacc.2015.07.020.
PubMed 26361154
Study at a glance
From the registry record, last updated by the sponsor on 21 Feb 2020. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Relationships Between Lipoprotein(a) Levels and Aortic Valve Calcification in Patients With Heterozygous Familial Hypercholesterolemia
- ClinicalTrials.gov ID
- NCT02976818
- Acronym / sponsor ID
- FHLPA / ISS 20167474
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 173 participants (actual)
- Lead sponsor
- Laval UniversityUniversity, hospital or other
- Collaborators
- Amgen
- Study start
- 30 Apr 2017 (actual)
- Primary completion
- 31 Oct 2019 (actual)
- Study completion
- 19 Feb 2020 (actual)
- First posted
- 29 Nov 2016 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Aortic valve stenosis (AVS), the most common form of valve disease in the western world, afflicts more than 1 million individuals in North America [1] and the burden of AVS is high and is expected to double within the next 50 years [2]. Medical therapy to prevent development or reduce progression of AVS is currently not available and the only effective treatment for AVS is aortic valve replacement, for which costs have been estimated up to 120,000$ [3,4]. Recently, we and others have identified rs10455872 at the LPA locus as a susceptibility single nucleotide polymorphism (SNP) for aortic valve calcification (AVC) and AVS [5,6] and rs10455872 is associated with elevated plasma lipoprotein (Lp)(a) levels [7]. Lp(a) is a LDL-like particle consisting of hepatically synthesized apolipoprotein B-100 that is noncovalently bound to the plasminogen-like glycoprotein apolipoprotein(a) [8]. Lp(a) promotes atherosclerotic stenosis, and possibly thrombosis, and has been hypothesized to contribute to wound healing, each of which could explain an association with AVS [9,10]. Lp(a) is relatively refractory to both lifestyle and drug intervention, with only nicotinic acid and monoclonal antibody inhibition of the proprotein convertase subtilisin/kexin type 9 that have showed reductions in Lp(a) levels [11,12]. However, the evidence that patients with AVS could be characterized by high Lp(a) levels is scarce. Glader et al. [13] showed that plasma levels of Lp(a) were almost 1.5-fold higher in 101 patients with AVS compared to matched controls, although this relationship did not reach statistical significance. Subsequent studies have also reported an association between elevated plasma Lp(a) levels and higher prevalence of AVS. More specifically, Kamstrup and colleagues [14] reported that elevated Lp(a) levels and corresponding genotypes were associated with increased risk of AVS in the general population with levels >90 mg/dL predicting a threefold increased risk. We have measured Lp(a) and oxidized phospholipids plasma levels in 220 patients with mild-to-moderate calcific AVS enrolled in the Aortic Stenosis Progression Observation: Measuring Effects of Rosuvastatin (ASTRONOMER) trial [15]. Results of this study suggest that high Lp(a) and oxidized phospholipids both predict calcific AVS progression, especially in younger patients with calcific AVS. We also found that statin therapy considerably increased both Lp(a) and oxidized phospholipids levels. Whether the fact that statins increase these risk factors for calcific AVS might explain at least to a certain extent why statins failed to promote calcific AVS regression or stabilization in at least four trials, including ASTRONOMER.
Familial hypercholesterolemia (FH) is an autosomal codominant single-gene disorder caused by mutations in the LDL receptor gene that disrupt normal clearance of LDL. Phenotypic features characteristic of the disease's heterozygous form are 2- to 3-fold raise in plasma LDL-cholesterol concentrations, tendinous xanthomatosis and premature atherosclerotic coronary artery disease. High Lp(a) levels have been shown to explain residual cardiovascular disease risk in FH [16,17]. Recent studies have demonstrated that FH heterozygotes have elevated AVC compared with non-FH subjects [18] and that Lp(a) levels were positively correlated with AVC in asymptomatic FH heterozygotes [19]. Vongpromek et al. [19] demonstrated that plasma Lp(a) concentration is a independent risk factor for AVC in a cohort of 129 asymptomatic heterozygous FH patients aged between 40 and 69 years. In this study, AVC was significantly associated with plasma Lp(a) level, age, body mass index, blood pressure, duration of statin use, cholesterol-year score and coronary artery calcification (CAC) score.
Study design
- Observational model
- Case-control
- Time perspective
- Cross-sectional
Who may qualify
- Ages
- 18 to 80 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
- Study population
- primary care clinic
Key inclusion criteria (3 listed)
- Men or women with heterozygous FH aged between 18 and 80 years
- FH patient carrying a documented mutation in the LDL receptor gene
- Subjects must be willing to give written informed consent and able to adhere to visit schedule
Key exclusion criteria (4 listed)
- Men or women < 18 or > 80 years
- Non-FH subjects
- History of alcohol or drug abuse within the past 2 years
- Subjects who are in a situation or have any condition that, in the opinion of the investigator, may interfere with optimal participation in the study
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Primary outcome
Association between Lp(a) concentrations and aortic valve calcification
Time frame: Week 1
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 21 Feb 2020.
- Background: PubMed 23143128Iung B, Vahanian A. Degenerative calcific aortic stenosis: a natural history. Heart. 2012 Nov;98 Suppl 4:iv7-13. doi: 10.1136/heartjnl-2012-302395.
- Background: PubMed 24603192Nishimura RA, Otto CM, Bonow RO, Carabello BA, Erwin JP 3rd, Guyton RA, O'Gara PT, Ruiz CE, Skubas NJ, Sorajja P, Sundt TM 3rd, Thomas JD; American College of Cardiology/American Heart Association Task Force on Practice Guidelines. 2014 AHA/ACC guideline for the management of patients with valvular heart disease: executive summary: a report of the American College of Cardiology/American Heart Association Task Force on Practice Guidelines. J Am Coll Cardiol. 2014 Jun 10;63(22):2438-88. doi: 10.1016/j.jacc.2014.02.537. Epub 2014 Mar 3. No abstract available.
- Background: PubMed 2530631Utermann G. The mysteries of lipoprotein(a). Science. 1989 Nov 17;246(4932):904-10. doi: 10.1126/science.2530631.
- Results publication: PubMed 16980116Nkomo VT, Gardin JM, Skelton TN, Gottdiener JS, Scott CG, Enriquez-Sarano M. Burden of valvular heart diseases: a population-based study. Lancet. 2006 Sep 16;368(9540):1005-11. doi: 10.1016/S0140-6736(06)69208-8.
- Results publication: PubMed 17194875Rosamond W, Flegal K, Friday G, Furie K, Go A, Greenlund K, Haase N, Ho M, Howard V, Kissela B, Kittner S, Lloyd-Jones D, McDermott M, Meigs J, Moy C, Nichol G, O'Donnell CJ, Roger V, Rumsfeld J, Sorlie P, Steinberger J, Thom T, Wasserthiel-Smoller S, Hong Y; American Heart Association Statistics Committee and Stroke Statistics Subcommittee. Heart disease and stroke statistics--2007 update: a report from the American Heart Association Statistics Committee and Stroke Statistics Subcommittee. Circulation. 2007 Feb 6;115(5):e69-171. doi: 10.1161/CIRCULATIONAHA.106.179918. Epub 2006 Dec 28. No abstract available.
- Results publication: PubMed 23388002Thanassoulis G, Campbell CY, Owens DS, Smith JG, Smith AV, Peloso GM, Kerr KF, Pechlivanis S, Budoff MJ, Harris TB, Malhotra R, O'Brien KD, Kamstrup PR, Nordestgaard BG, Tybjaerg-Hansen A, Allison MA, Aspelund T, Criqui MH, Heckbert SR, Hwang SJ, Liu Y, Sjogren M, van der Pals J, Kalsch H, Muhleisen TW, Nothen MM, Cupples LA, Caslake M, Di Angelantonio E, Danesh J, Rotter JI, Sigurdsson S, Wong Q, Erbel R, Kathiresan S, Melander O, Gudnason V, O'Donnell CJ, Post WS; CHARGE Extracoronary Calcium Working Group. Genetic associations with valvular calcification and aortic stenosis. N Engl J Med. 2013 Feb 7;368(6):503-12. doi: 10.1056/NEJMoa1109034.
- Results publication: PubMed 24704946Arsenault BJ, Boekholdt SM, Dube MP, Rheaume E, Wareham NJ, Khaw KT, Sandhu MS, Tardif JC. Lipoprotein(a) levels, genotype, and incident aortic valve stenosis: a prospective Mendelian randomization study and replication in a case-control cohort. Circ Cardiovasc Genet. 2014 Jun;7(3):304-10. doi: 10.1161/CIRCGENETICS.113.000400. Epub 2014 Apr 5.
- Results publication: PubMed 20032323Clarke R, Peden JF, Hopewell JC, Kyriakou T, Goel A, Heath SC, Parish S, Barlera S, Franzosi MG, Rust S, Bennett D, Silveira A, Malarstig A, Green FR, Lathrop M, Gigante B, Leander K, de Faire U, Seedorf U, Hamsten A, Collins R, Watkins H, Farrall M; PROCARDIS Consortium. Genetic variants associated with Lp(a) lipoprotein level and coronary disease. N Engl J Med. 2009 Dec 24;361(26):2518-28. doi: 10.1056/NEJMoa0902604.
- Results publication: PubMed 22898070Helgadottir A, Gretarsdottir S, Thorleifsson G, Holm H, Patel RS, Gudnason T, Jones GT, van Rij AM, Eapen DJ, Baas AF, Tregouet DA, Morange PE, Emmerich J, Lindblad B, Gottsater A, Kiemeny LA, Lindholt JS, Sakalihasan N, Ferrell RE, Carey DJ, Elmore JR, Tsao PS, Grarup N, Jorgensen T, Witte DR, Hansen T, Pedersen O, Pola R, Gaetani E, Magnadottir HB, Wijmenga C, Tromp G, Ronkainen A, Ruigrok YM, Blankensteijn JD, Mueller T, Wells PS, Corral J, Soria JM, Souto JC, Peden JF, Jalilzadeh S, Mayosi BM, Keavney B, Strawbridge RJ, Sabater-Lleal M, Gertow K, Baldassarre D, Nyyssonen K, Rauramaa R, Smit AJ, Mannarino E, Giral P, Tremoli E, de Faire U, Humphries SE, Hamsten A, Haraldsdottir V, Olafsson I, Magnusson MK, Samani NJ, Levey AI, Markus HS, Kostulas K, Dichgans M, Berger K, Kuhlenbaumer G, Ringelstein EB, Stoll M, Seedorf U, Rothwell PM, Powell JT, Kuivaniemi H, Onundarson PT, Valdimarsson E, Matthiasson SE, Gudbjartsson DF, Thorgeirsson G, Quyyumi AA, Watkins H, Farrall M, Thorsteinsdottir U, Stefansson K. Apolipoprotein(a) genetic sequence variants associated with systemic atherosclerosis and coronary atherosclerotic burden but not with venous thromboembolism. J Am Coll Cardiol. 2012 Aug 21;60(8):722-9. doi: 10.1016/j.jacc.2012.01.078.
- Results publication: PubMed 9111234Yano Y, Shimokawa K, Okada Y, Noma A. Immunolocalization of lipoprotein(a) in wounded tissues. J Histochem Cytochem. 1997 Apr;45(4):559-68. doi: 10.1177/002215549704500408.
- Results publication: PubMed 22085343AIM-HIGH Investigators; Boden WE, Probstfield JL, Anderson T, Chaitman BR, Desvignes-Nickens P, Koprowicz K, McBride R, Teo K, Weintraub W. Niacin in patients with low HDL cholesterol levels receiving intensive statin therapy. N Engl J Med. 2011 Dec 15;365(24):2255-67. doi: 10.1056/NEJMoa1107579. Epub 2011 Nov 15.
- Results publication: PubMed 23129602Raal F, Scott R, Somaratne R, Bridges I, Li G, Wasserman SM, Stein EA. Low-density lipoprotein cholesterol-lowering effects of AMG 145, a monoclonal antibody to proprotein convertase subtilisin/kexin type 9 serine protease in patients with heterozygous familial hypercholesterolemia: the Reduction of LDL-C with PCSK9 Inhibition in Heterozygous Familial Hypercholesterolemia Disorder (RUTHERFORD) randomized trial. Circulation. 2012 Nov 13;126(20):2408-17. doi: 10.1161/CIRCULATIONAHA.112.144055. Epub 2012 Nov 5.
- Individual participant dataSharing planned: No
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Patrick Couture, MD, FRCP, PhD principal investigator
Laval University
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Heterozygous Familial Hypercholesterolemia, run by Laval University at 1 site in Canada.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 3 inclusion and 4 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 21 Feb 2020. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Canada. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Association between Lp(a) concentrations and aortic valve calcification (time frame: Week 1). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT02976818, which also lists 19 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 21 Feb 2020.