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Narinx N, David K, Walravens J, Vermeersch P, Claessens F, Fiers T, Lapauw B, Antonio L, Vanderschueren D. Role of sex hormone-binding globulin in the free hormone hypothesis and the relevance of free testosterone in androgen physiology. Cell Mol Life Sci 2022; 79:543. [PMID: 36205798 DOI: 10.1007/s00018-022-04562-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Revised: 08/12/2022] [Accepted: 09/17/2022] [Indexed: 11/03/2022]
Abstract
According to the free hormone hypothesis, biological activity of a certain hormone is best reflected by free rather than total hormone concentrations. A crucial element in this theory is the presence of binding proteins, which function as gatekeepers for steroid action. For testosterone, tissue exposure is governed by a delicate equilibrium between free and total testosterone which is determined through interaction with the binding proteins sex hormone-binding globulin and albumin. Ageing, genetics and various pathological conditions influence this equilibrium, hereby possibly modulating hormonal exposure to the target tissues. Despite ongoing controversy on the subject, strong evidence from recent in vitro, in vivo and human experiments emphasizes the relevance of free testosterone. Currently, however, clinical possibilities for free hormone diagnostics are limited. Direct immunoassays are inaccurate, while gold standard liquid chromatography with tandem mass spectrometry (LC-MS/MS) coupled equilibrium dialysis is not available for clinical routine. Calculation models for free testosterone, despite intrinsic limitations, provide a suitable alternative, of which the Vermeulen calculator is currently the preferred method. Calculated free testosterone is indeed associated with bone health, frailty and other clinical endpoints. Moreover, the added value of free testosterone in the clinical diagnosis of male hypogonadism is clearly evident. In suspected hypogonadal men in whom borderline low total testosterone and/or altered sex hormone-binding globulin levels are detected, the determination of free testosterone avoids under- and overdiagnosis, facilitating adequate prescription of hormonal replacement therapy. As such, free testosterone should be integrated as a standard biochemical parameter, on top of total testosterone, in the diagnostic workflow of male hypogonadism.
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Affiliation(s)
- N Narinx
- Laboratory of Clinical and Experimental Endocrinology, Department of Chronic Diseases and Metabolism, KU Leuven, Herestraat 49, ON1bis box 902, 3000, Leuven, Belgium.,Department of Laboratory Medicine, University Hospitals Leuven, Leuven, Belgium
| | - K David
- Laboratory of Clinical and Experimental Endocrinology, Department of Chronic Diseases and Metabolism, KU Leuven, Herestraat 49, ON1bis box 902, 3000, Leuven, Belgium.,Department of Endocrinology, University Hospitals Leuven, Leuven, Belgium
| | - J Walravens
- Department of Internal Medicine and Pediatrics, Ghent University, Ghent, Belgium
| | - P Vermeersch
- Department of Laboratory Medicine, University Hospitals Leuven, Leuven, Belgium
| | - F Claessens
- Laboratory of Molecular Endocrinology, Department of Cellular and Molecular Medicine, KU Leuven, Leuven, Belgium
| | - T Fiers
- Department of Laboratory Medicine, Ghent University Hospital, Ghent, Belgium
| | - B Lapauw
- Department of Internal Medicine and Pediatrics, Ghent University, Ghent, Belgium.,Department of Endocrinology, Ghent University Hospital, Ghent, Belgium
| | - L Antonio
- Laboratory of Clinical and Experimental Endocrinology, Department of Chronic Diseases and Metabolism, KU Leuven, Herestraat 49, ON1bis box 902, 3000, Leuven, Belgium.,Department of Endocrinology, University Hospitals Leuven, Leuven, Belgium
| | - D Vanderschueren
- Laboratory of Clinical and Experimental Endocrinology, Department of Chronic Diseases and Metabolism, KU Leuven, Herestraat 49, ON1bis box 902, 3000, Leuven, Belgium. .,Department of Endocrinology, University Hospitals Leuven, Leuven, Belgium.
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2
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Schubert M, Pérez Lanuza L, Wöste M, Dugas M, Carmona FD, Palomino-Morales RJ, Rassam Y, Heilmann-Heimbach S, Tüttelmann F, Kliesch S, Gromoll J. A GWAS in Idiopathic/Unexplained Infertile Men Detects a Genomic Region Determining Follicle-Stimulating Hormone Levels. J Clin Endocrinol Metab 2022; 107:2350-2361. [PMID: 35305013 PMCID: PMC9282256 DOI: 10.1210/clinem/dgac165] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Indexed: 11/19/2022]
Abstract
CONTEXT Approximately 70% of infertile men are diagnosed with idiopathic (abnormal semen parameters) or unexplained (normozoospermia) infertility, with the common feature of lacking etiologic factors. Follicle-stimulating hormone (FSH) is essential for initiation and maintenance of spermatogenesis. Certain single-nucleotide variations (SNVs; formerly single-nucleotide polymorphisms [SNPs]) (ie, FSHB c.-211G > T, FSHR c.2039A > G) are associated with FSH, testicular volume, and spermatogenesis. It is unknown to what extent other variants are associated with FSH levels and therewith resemble causative factors for infertility. OBJECTIVE We aimed to identify further genetic determinants modulating FSH levels in a cohort of men presenting with idiopathic or unexplained infertility. METHODS We retrospectively (2010-2018) selected 1900 men with idiopathic/unexplained infertility. In the discovery study (n = 760), a genome-wide association study (GWAS) was performed (Infinium PsychArrays) in association with FSH values (Illumina GenomeStudio, v2.0). Minor allele frequencies (MAFs) were analyzed for the discovery and an independent normozoospermic cohort. In the validation study (n = 1140), TaqMan SNV polymerase chain reaction was conducted for rs11031005 and rs10835638 in association with andrological parameters. RESULTS Imputation revealed 9 SNVs in high linkage disequilibrium, with genome-wide significance (P < 4.28e-07) at the FSHB locus 11p.14.1 being associated with FSH. The 9 SNVs accounted for up to a 4.65% variance in FSH level. In the oligozoospermic subgroup, this was increased up to 6.95% and the MAF was enhanced compared to an independent cohort of normozoospermic men. By validation, a significant association for rs11031005/rs10835638 with FSH (P = 4.71e-06/5.55e-07) and FSH/luteinizing hormone ratio (P = 2.08e-12/6.4e-12) was evident. CONCLUSIONS This GWAS delineates the polymorphic FSHB genomic region as the main determinant of FSH levels in men with unexplained or idiopathic infertility. Given the essential role of FSH, molecular detection of one of the identified SNVs that causes lowered FSH and therewith decreases spermatogenesis could resolve the idiopathic/unexplained origin by this etiologic factor.
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Affiliation(s)
| | | | - Marius Wöste
- Institute of Medical Informatics, University of Münster, Münster, North Rhine-Westphalia 48149, Germany
| | - Martin Dugas
- Institute of Medical Informatics, University of Münster, Münster, North Rhine-Westphalia 48149, Germany
- Institute of Medical Informatics, Heidelberg University Hospital, D-69120 Heidelberg, Germany
| | - F David Carmona
- Department of Genetics and Institute of Biotechnology, University of Granada, Granada, Andalusia 18016, Spain
- Instituto de Investigación Biosanitaria ibs.GRANADA, Granada, Andalusia 18012, Spain
| | - Rogelio J Palomino-Morales
- Instituto de Investigación Biosanitaria ibs.GRANADA, Granada, Andalusia 18012, Spain
- Department of Biochemistry and Molecular Biology I, Faculty of Sciences, University of Granada, Granada, Andalusia 18071, Spain
| | - Yousif Rassam
- Department of Clinical and Surgical Andrology, Centre of Reproductive Medicine and Andrology, University of Münster, Münster, North Rhine-Westphalia 48149, Germany
| | - Stefanie Heilmann-Heimbach
- Institute of Human Genetics, University of Bonn, School of Medicine & University Hospital, Bonn, North Rhine-Westphalia 53127, Germany
| | - Frank Tüttelmann
- Institute of Reproductive Genetics, University of Münster, Münster, North Rhine-Westphalia 48149, Germany
| | - Sabine Kliesch
- Department of Clinical and Surgical Andrology, Centre of Reproductive Medicine and Andrology, University of Münster, Münster, North Rhine-Westphalia 48149, Germany
| | - Jörg Gromoll
- Correspondence: Jörg Gromoll, Dr. rer. nat., Institute of Reproductive and Regenerative Biology, Centre of Reproductive Medicine and Andrology, University of Münster, Albert-Schweitzer-Campus 1, Geb. D11, 48149 Münster, Germany.
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3
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The effect of sex hormone-binding globulin gene polymorphisms on the serum level of SHBG hormone in the men with prostate cancer. Meta Gene 2022. [DOI: 10.1016/j.mgene.2021.101000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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de Beer R, Outhoff K, Phulukdaree A, Soma P. Prevalence of SLCO1B1 single nucleotide variations and their association with hypercholesterolaemia in hypercholesterolemic patients in Gauteng, South Africa. Xenobiotica 2021; 51:949-959. [PMID: 34154510 DOI: 10.1080/00498254.2021.1945165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Statins, the standard treatment for hypercholesterolaemia, among the most widely prescribed, have been associated with side effects, including statin intolerance. The aim of this study was to determine the background prevalence of SLCO1B1 SNVs in a randomly selected sample and to investigate if there are associations between SLCO1B1 SNVs and hypercholesterolaemia patients on statin therapy.Using Polymerase Chain Reaction - Restriction Fragment Length Polymorphism, the presence of SLCO1B1 SNVs (rs4149056, rs2306283 and rs4363657) was identified, while ELISA was used to quantify serum CK levels. Statin intolerance risk was calculated using a quantitative questionnaire.The risk of developing statin intolerance was found to be low (in 36%), moderate (in 49%), or high (in 15%) in the statin-treated group. The prevalence of the rs4149056 variant was 16% in (controls) and 20% in (statin) group; rs2306283 variant was present in 31.5% (controls), 10.5% in (statin) group; while the prevalence of the rs4363657 variant was similar in each. No association between the presence of any one of the SNVs and the statin intolerance severity risk score or CK elevation was found.These findings will facilitate a more personalized approach to statin therapy, especially relevant within the diverse South African population.
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Affiliation(s)
- Rene de Beer
- Department of Pharmacology, School of Medicine, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa
| | - Kim Outhoff
- Department of Pharmacology, School of Medicine, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa
| | - Alisa Phulukdaree
- Department of Physiology, School of Medicine, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa
| | - Prashilla Soma
- Department of Anatomy, School of Medicine, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa
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Laan M, Kasak L, Timinskas K, Grigorova M, Venclovas Č, Renaux A, Lenaerts T, Punab M. NR5A1 c.991-1G > C splice-site variant causes familial 46,XY partial gonadal dysgenesis with incomplete penetrance. Clin Endocrinol (Oxf) 2021; 94:656-666. [PMID: 33296094 DOI: 10.1111/cen.14381] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Revised: 10/22/2020] [Accepted: 11/24/2020] [Indexed: 12/19/2022]
Abstract
OBJECTIVE The study aimed to identify the genetic basis of partial gonadal dysgenesis (PGD) in a non-consanguineous family from Estonia. PATIENTS Cousins P (proband) 1 (12 years; 46,XY) and P2 (18 years; 46,XY) presented bilateral cryptorchidism, severe penoscrotal hypospadias, low bitesticular volume and azoospermia in P2. Their distant relative, P3 (30 years; 46,XY), presented bilateral cryptorchidism and cryptozoospermia. DESIGN Exome sequencing was targeted to P1-P3 and five unaffected family members. RESULTS P1-P2 were identified as heterozygous carriers of NR5A1 c.991-1G > C. NR5A1 encodes the steroidogenic factor-1 essential in gonadal development and specifically expressed in adrenal, spleen, pituitary and testes. Together with a previous PGD case from Belgium (Robevska et al 2018), c.991-1G > C represents the first recurrent NR5A1 splice-site mutation identified in patients. The majority of previous reports on NR5A1 mutation carriers have not included phenotype-genotype data of the family members. Segregation analysis across three generations showed incomplete penetrance (<50%) and phenotypic variability among the carriers of NR5A1 c.991-1G > C. The variant pathogenicity was possibly modulated by rare heterozygous variants inherited from the other parent, OTX2 p.P134R (P1) or PROP1 c.301_302delAG (P2). For P3, the pedigree structure supported a distinct genetic cause. He carries a previously undescribed likely pathogenic variant SOS1 p.Y136H. SOS1, critical in Ras/MAPK signalling and foetal development, is a strong novel candidate gene for cryptorchidism. CONCLUSIONS Detailed genetic profiling facilitates counselling and clinical management of the probands, and supports unaffected mutation carriers in the family for their reproductive decision making.
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Affiliation(s)
- Maris Laan
- Institute of Biomedicine and Translational Medicine, University of Tartu, Tartu, Estonia
| | - Laura Kasak
- Institute of Biomedicine and Translational Medicine, University of Tartu, Tartu, Estonia
| | - Kęstutis Timinskas
- Institute of Biotechnology, Life Sciences Center, Vilnius University, Vilnius, Lithuania
| | - Marina Grigorova
- Institute of Biomedicine and Translational Medicine, University of Tartu, Tartu, Estonia
| | - Česlovas Venclovas
- Institute of Biotechnology, Life Sciences Center, Vilnius University, Vilnius, Lithuania
| | - Alexandre Renaux
- Interuniversity Institute of Bioinformatics in Brussels, Université libre de Bruxelles, Vrije Universiteit Brussel, Brussels, Belgium
- Machine Learning Group, Université libre de Bruxelles, Brussels, Belgium
- Artificial Intelligence lab, Vrije Universiteit Brussel, Brussels, Belgium
| | - Tom Lenaerts
- Interuniversity Institute of Bioinformatics in Brussels, Université libre de Bruxelles, Vrije Universiteit Brussel, Brussels, Belgium
- Machine Learning Group, Université libre de Bruxelles, Brussels, Belgium
- Artificial Intelligence lab, Vrije Universiteit Brussel, Brussels, Belgium
| | - Margus Punab
- Andrology Center, Tartu University Hospital, Tartu, Estonia
- Institute of Clinical Medicine, University of Tartu, Tartu, Estonia
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Lotti F, Frizza F, Balercia G, Barbonetti A, Behre HM, Calogero AE, Cremers J, Francavilla F, Isidori AM, Kliesch S, La Vignera S, Lenzi A, Marcou M, Pilatz A, Poolamets O, Punab M, Peraza Godoy MF, Rajmil O, Salvio G, Shaeer O, Weidner W, Maseroli E, Cipriani S, Baldi E, Degl’Innocenti S, Danza G, Caldini AL, Terreni A, Boni L, Krausz C, Maggi M. The European Academy of Andrology (EAA) ultrasound study on healthy, fertile men: clinical, seminal and biochemical characteristics. Andrology 2020; 8:1005-1020. [DOI: 10.1111/andr.12808] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Revised: 04/16/2020] [Accepted: 04/27/2020] [Indexed: 12/20/2022]
Affiliation(s)
- Francesco Lotti
- Andrology, Female Endocrinology and Gender Incongruence Unit Department of Experimental and Clinical Biomedical Sciences “Mario Serio” University of Florence Florence Italy
| | - Francesca Frizza
- Andrology, Female Endocrinology and Gender Incongruence Unit Department of Experimental and Clinical Biomedical Sciences “Mario Serio” University of Florence Florence Italy
| | - Giancarlo Balercia
- Endocrinology Unit Ospedali Riuniti Ancona Polytechnic University of Marche Ancona Italy
| | - Arcangelo Barbonetti
- Andrology Unit Department of Life, Health and Environmental Sciences University of L’Aquila L’Aquila Italy
| | - Hermann M. Behre
- Center for Reproductive Medicine and Andrology Martin Luther University Halle‐Wittenberg Halle Germany
| | - Aldo E. Calogero
- Department of Clinical and Experimental Medicine University of Catania Italy
| | - Jann‐Frederik Cremers
- Department of Clinical and Surgical Andrology Centre of Reproductive Medicine and Andrology Münster University Hospital Münster Germany
| | - Felice Francavilla
- Andrology Unit Department of Life, Health and Environmental Sciences University of L’Aquila L’Aquila Italy
| | - Andrea M. Isidori
- Department of Experimental Medicine Sapienza University of Rome Rome Italy
| | - Sabine Kliesch
- Department of Clinical and Surgical Andrology Centre of Reproductive Medicine and Andrology Münster University Hospital Münster Germany
| | - Sandro La Vignera
- Department of Clinical and Experimental Medicine University of Catania Italy
| | - Andrea Lenzi
- Department of Experimental Medicine Sapienza University of Rome Rome Italy
| | - Marios Marcou
- Center for Reproductive Medicine and Andrology Martin Luther University Halle‐Wittenberg Halle Germany
| | - Adrian Pilatz
- Department of Urology Pediatric Urology and Andrology Justus Liebig University Giessen Germany
| | | | - Margus Punab
- Andrology Unit Tartu University Hospital Tartu Estonia
| | - Maria Fernanda Peraza Godoy
- Andrology Department Fundació Puigvert Universitat Autònoma de Barcelona Instituto de Investigaciones Biomédicas Sant Pau (IIB‐Sant Pau) Barcelona Spain
| | - Osvaldo Rajmil
- Andrology Department Fundació Puigvert Universitat Autònoma de Barcelona Instituto de Investigaciones Biomédicas Sant Pau (IIB‐Sant Pau) Barcelona Spain
| | - Gianmaria Salvio
- Endocrinology Unit Ospedali Riuniti Ancona Polytechnic University of Marche Ancona Italy
| | - Osama Shaeer
- Department of Andrology Kasr El Aini Faculty of Medicine Cairo University Cairo Egypt
| | - Wolfgang Weidner
- Department of Urology Pediatric Urology and Andrology Justus Liebig University Giessen Germany
| | - Elisa Maseroli
- Andrology, Female Endocrinology and Gender Incongruence Unit Department of Experimental and Clinical Biomedical Sciences “Mario Serio” University of Florence Florence Italy
| | - Sarah Cipriani
- Andrology, Female Endocrinology and Gender Incongruence Unit Department of Experimental and Clinical Biomedical Sciences “Mario Serio” University of Florence Florence Italy
| | - Elisabetta Baldi
- Andrology, Female Endocrinology and Gender Incongruence Unit Department of Experimental and Clinical Biomedical Sciences “Mario Serio” University of Florence Florence Italy
| | - Selene Degl’Innocenti
- Andrology, Female Endocrinology and Gender Incongruence Unit Department of Experimental and Clinical Biomedical Sciences “Mario Serio” University of Florence Florence Italy
| | - Giovanna Danza
- Endocrinology Unit Department of Experimental and Clinical Biomedical Sciences “Mario Serio” University of Florence Florence Italy
| | | | | | - Luca Boni
- Clinical Trials Coordinating Center Toscano Cancer Institute University Hospital Careggi Florence Italy
| | - Csilla Krausz
- Andrology, Female Endocrinology and Gender Incongruence Unit Department of Experimental and Clinical Biomedical Sciences “Mario Serio” University of Florence Florence Italy
| | - Mario Maggi
- Endocrinology Unit Department of Experimental and Clinical Biomedical Sciences “Mario Serio” University of Florence Florence Italy
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Read RW, Schlauch KA, Elhanan G, Metcalf WJ, Slonim AD, Aweti R, Borkowski R, Grzymski JJ. GWAS and PheWAS of red blood cell components in a Northern Nevadan cohort. PLoS One 2019; 14:e0218078. [PMID: 31194788 PMCID: PMC6564422 DOI: 10.1371/journal.pone.0218078] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Accepted: 05/21/2019] [Indexed: 01/20/2023] Open
Abstract
In this study, we perform a full genome-wide association study (GWAS) to identify statistically significantly associated single nucleotide polymorphisms (SNPs) with three red blood cell (RBC) components and follow it with two independent PheWASs to examine associations between phenotypic data (case-control status of diagnoses or disease), significant SNPs, and RBC component levels. We first identified associations between the three RBC components: mean platelet volume (MPV), mean corpuscular volume (MCV), and platelet counts (PC), and the genotypes of approximately 500,000 SNPs on the Illumina Infimum DNA Human OmniExpress-24 BeadChip using a single cohort of 4,673 Northern Nevadans. Twenty-one SNPs in five major genomic regions were found to be statistically significantly associated with MPV, two regions with MCV, and one region with PC, with p<5x10-8. Twenty-nine SNPs and nine chromosomal regions were identified in 30 previous GWASs, with effect sizes of similar magnitude and direction as found in our cohort. The two strongest associations were SNP rs1354034 with MPV (p = 2.4x10-13) and rs855791 with MCV (p = 5.2x10-12). We then examined possible associations between these significant SNPs and incidence of 1,488 phenotype groups mapped from International Classification of Disease version 9 and 10 (ICD9 and ICD10) codes collected in the extensive electronic health record (EHR) database associated with Healthy Nevada Project consented participants. Further leveraging data collected in the EHR, we performed an additional PheWAS to identify associations between continuous red blood cell (RBC) component measures and incidence of specific diagnoses. The first PheWAS illuminated whether SNPs associated with RBC components in our cohort were linked with other hematologic phenotypic diagnoses or diagnoses of other nature. Although no SNPs from our GWAS were identified as strongly associated to other phenotypic components, a number of associations were identified with p-values ranging between 1x10-3 and 1x10-4 with traits such as respiratory failure, sleep disorders, hypoglycemia, hyperglyceridemia, GERD and IBS. The second PheWAS examined possible phenotypic predictors of abnormal RBC component measures: a number of hematologic phenotypes such as thrombocytopenia, anemias, hemoglobinopathies and pancytopenia were found to be strongly associated to RBC component measures; additional phenotypes such as (morbid) obesity, malaise and fatigue, alcoholism, and cirrhosis were also identified to be possible predictors of RBC component measures.
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Affiliation(s)
- Robert W. Read
- Applied Innovation Center, Renown Institute for Health Innovation, Desert Research Institute, Reno, NV, United States of America
| | - Karen A. Schlauch
- Applied Innovation Center, Renown Institute for Health Innovation, Desert Research Institute, Reno, NV, United States of America
| | - Gai Elhanan
- Applied Innovation Center, Renown Institute for Health Innovation, Desert Research Institute, Reno, NV, United States of America
| | - William J. Metcalf
- Applied Innovation Center, Renown Institute for Health Innovation, Desert Research Institute, Reno, NV, United States of America
| | | | - Ramsey Aweti
- 23andMe, Inc., Mountain View, CA, United States of America
| | | | - Joseph J. Grzymski
- Applied Innovation Center, Renown Institute for Health Innovation, Desert Research Institute, Reno, NV, United States of America
- Renown Health, Reno, NV, United States of America
- * E-mail:
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Evaluation of serum SLCO1B1 levels and genetic variants of SLCO1B1 rs4149056 and rs2306283 in patients with early and exudative age-related macular degeneration. Gene 2018; 676:139-145. [DOI: 10.1016/j.gene.2018.07.031] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Revised: 06/18/2018] [Accepted: 07/11/2018] [Indexed: 01/10/2023]
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