Aki S. Havulinna
Aalto University
Network
Latest external collaboration on country level. Dive into details by clicking on the dots.
Publication
Featured researches published by Aki S. Havulinna.
Nature Genetics | 2008
Sekar Kathiresan; Olle Melander; Candace Guiducci; Aarti Surti; Noël P. Burtt; Mark J. Rieder; Gregory M. Cooper; Charlotta Roos; Benjamin F. Voight; Aki S. Havulinna; Björn Wahlstrand; Thomas Hedner; Dolores Corella; E. Shyong Tai; Jose M. Ordovas; Göran Berglund; Erkki Vartiainen; Pekka Jousilahti; Bo Hedblad; Marja-Riitta Taskinen; Christopher Newton-Cheh; Veikko Salomaa; Leena Peltonen; Leif Groop; David Altshuler; Marju Orho-Melander
Blood concentrations of lipoproteins and lipids are heritable risk factors for cardiovascular disease. Using genome-wide association data from three studies (n = 8,816 that included 2,758 individuals from the Diabetes Genetics Initiative specific to the current paper as well as 1,874 individuals from the FUSION study of type 2 diabetes and 4,184 individuals from the SardiNIA study of aging-associated variables reported in a companion paper in this issue) and targeted replication association analyses in up to 18,554 independent participants, we show that common SNPs at 18 loci are reproducibly associated with concentrations of low-density lipoprotein (LDL) cholesterol, high-density lipoprotein (HDL) cholesterol, and/or triglycerides. Six of these loci are new (P < 5 × 10−8 for each new locus). Of the six newly identified chromosomal regions, two were associated with LDL cholesterol (1p13 near CELSR2, PSRC1 and SORT1 and 19p13 near CILP2 and PBX4), one with HDL cholesterol (1q42 in GALNT2) and five with triglycerides (7q11 near TBL2 and MLXIPL, 8q24 near TRIB1, 1q42 in GALNT2, 19p13 near CILP2 and PBX4 and 1p31 near ANGPTL3). At 1p13, the LDL-associated SNP was also strongly correlated with CELSR2, PSRC1, and SORT1 transcript levels in human liver, and a proxy for this SNP was recently shown to affect risk for coronary artery disease. Understanding the molecular, cellular and clinical consequences of the newly identified loci may inform therapy and clinical care.
Statistics in Medicine | 2014
Aki S. Havulinna
Age-period-cohort (APC) models are widely used for studying time trends of disease incidence or mortality. Model identifiability has become less of a problem with Bayesian APC models. These models are usually based on random walk (RW1, RW2) smoothing priors. For long and complex time series and for long predicted periods, these models as such may not be adequate. We present two extensions for the APC models. First, we introduce flexible interactions between the age, period and cohort effects based on a two-dimensional conditional autoregressive smoothing prior on the age/period plane. Our second extension uses autoregressive integrated (ARI) models to provide reasonable long-term predictions. To illustrate the utility of our model framework, we provide stochastic predictions for the Finnish male and female population, in 2010-2050. For that, we first study and forecast all-cause male and female mortality in Finland, 1878-2050, showing that using an interaction term is needed for fitting and interpreting the observed data. We then provide population predictions using a cohort component model, which also requires predictions for fertility and migration. As our main conclusion, ARI models have better properties for predictions than the simple RW models do, but mixing these prediction models with RW1 or RW2 smoothing priors for observed periods leads to a model that is not fully consistent. Further research with our model framework will concentrate on using a more consistent model for smoothing and prediction, such as autoregressive integrated moving average models with state-space methods or Gaussian process priors.
WOS | 2017
Marjo Piironen; Olavi Ukkola; Heikki V. Huikuri; Aki S. Havulinna; Heli Koukkunen; Juha Mustonen; Matti Ketonen; Seppo Lehto; Juhani Airaksinen; Y. Antero Kesaeniemi; Veikko Salomaa
WOS | 2017
Sanni Ruotsalainen; Heidi Hautakangas; Aki S. Havulinna; Tuomo Kiiskinen; Ida Surakka; Matti Pirinen; Hannele Laivuori; Elisabeth Widen; Samuli Ripatti
WOS | 2017
Marja Marchesani; Efthymia Vlachopoulou; Veikko Salomaa; Markus Perola; Aki S. Havulinna; Pekka J. Karhunen; Heikki V. Huikuri; Markku S. Nieminen; Juha Sinisalo; Marja-Liisa Lokki
WOS | 2016
Pauliina Tuomikoski; Aki S. Havulinna; Veikko Salomaa; Tomi S. Mikkola
WOS | 2015
Annukka M. Lahtinen; Aki S. Havulinna; Antti Jula; Veikko Salomaa; Kimmo Kontula
Archive | 2015
Veikko Salomaa; Arto Pietilä; Aki S. Havulinna
WOS | 2014
Karsten Sydow; Aki S. Havulinna; Francisco Ojeda; Renate B. Schnabel; Johannes Tobias Neumann; Tanja Zeller; Annika Jagodzinski; Stefan Blankenberg; Veikko Salomaa
WOS | 2014
Peter Würtz; Aki S. Havulinna; David Prieto; Johannes Kettunen; Antti I. Kangas; Pasi Soininen; Shah Ebrahim; Samuli Ripatti; Thomas J. Wang; Robert Gerszten; Mika Ala-Korpela; Veikko Salomaa