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Alade A, Peter T, Busch T, Awotoye W, Anand D, Abimbola O, Aladenika E, Olujitan M, Rysavy O, Nguyen PF, Naicker T, Mossey PA, Gowans LJJ, Eshete MA, Adeyemo WL, Zeng E, Van Otterloo E, O'Rorke M, Adeyemo A, Murray JC, Lachke SA, Romitti PA, Butali A. Shared genetic risk between major orofacial cleft phenotypes in an African population. Genet Epidemiol 2024. [PMID: 38634654 DOI: 10.1002/gepi.22564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 02/22/2024] [Accepted: 03/27/2024] [Indexed: 04/19/2024]
Abstract
Nonsyndromic orofacial clefts (NSOFCs) represent a large proportion (70%-80%) of all OFCs. They can be broadly categorized into nonsyndromic cleft lip with or without cleft palate (NSCL/P) and nonsyndromic cleft palate only (NSCPO). Although NSCL/P and NSCPO are considered etiologically distinct, recent evidence suggests the presence of shared genetic risks. Thus, we investigated the genetic overlap between NSCL/P and NSCPO using African genome-wide association study (GWAS) data on NSOFCs. These data consist of 814 NSCL/P, 205 NSCPO cases, and 2159 unrelated controls. We generated common single-nucleotide variants (SNVs) association summary statistics separately for each phenotype (NSCL/P and NSCPO) under an additive genetic model. Subsequently, we employed the pleiotropic analysis under the composite null (PLACO) method to test for genetic overlap. Our analysis identified two loci with genome-wide significance (rs181737795 [p = 2.58E-08] and rs2221169 [p = 4.5E-08]) and one locus with marginal significance (rs187523265 [p = 5.22E-08]). Using mouse transcriptomics data and information from genetic phenotype databases, we identified MDN1, MAP3k7, KMT2A, ARCN1, and VADC2 as top candidate genes for the associated SNVs. These findings enhance our understanding of genetic variants associated with NSOFCs and identify potential candidate genes for further exploration.
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Affiliation(s)
- Azeez Alade
- Iowa Institute of Oral Health Research, University of Iowa, Iowa City, Iowa, USA
- Department of Epidemiology, College of Public Health, University of Iowa, Iowa City, Iowa, USA
| | - Tabitha Peter
- Iowa Institute of Oral Health Research, University of Iowa, Iowa City, Iowa, USA
| | - Tamara Busch
- Iowa Institute of Oral Health Research, University of Iowa, Iowa City, Iowa, USA
| | - Waheed Awotoye
- Department of Orthodontics, College of Dentistry, University of Iowa, Iowa City, Iowa, USA
| | - Deepti Anand
- Department of Biological Sciences, University of Delaware, Newark, Delaware, USA
| | - Oladayo Abimbola
- Iowa Institute of Oral Health Research, University of Iowa, Iowa City, Iowa, USA
| | - Emmanuel Aladenika
- Iowa Institute of Oral Health Research, University of Iowa, Iowa City, Iowa, USA
| | - Mojisola Olujitan
- Iowa Institute of Oral Health Research, University of Iowa, Iowa City, Iowa, USA
| | - Oscar Rysavy
- Iowa Institute of Oral Health Research, University of Iowa, Iowa City, Iowa, USA
| | - Phuong Fawng Nguyen
- Iowa Institute of Oral Health Research, University of Iowa, Iowa City, Iowa, USA
| | - Thirona Naicker
- Department of Paediatrics, Clinical Genetics, University of KwaZulu-Natal and Inkosi Albert Luthuli Central Hospital, Durban, South Africa
| | - Peter A Mossey
- Department of Orthodontics, University of Dundee, Dundee, UK
| | - Lord J J Gowans
- Komfo Anokye Teaching Hospital and Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Mekonen A Eshete
- Department of Surgery, Addis Ababa University, School of Medicine, Addis Ababa, Ethiopia
| | - Wasiu L Adeyemo
- Department of Oral and Maxillofacial Surgery, University of Lagos, Lagos, Nigeria
| | - Erliang Zeng
- Iowa Institute of Oral Health Research, University of Iowa, Iowa City, Iowa, USA
| | - Eric Van Otterloo
- Iowa Institute of Oral Health Research, University of Iowa, Iowa City, Iowa, USA
- Department of Periodontics, College of Dentistry, University of Iowa, Iowa City, Iowa, USA
| | - Michael O'Rorke
- Department of Epidemiology, College of Public Health, University of Iowa, Iowa City, Iowa, USA
| | | | - Jeffrey C Murray
- Department of Pediatrics, University of Iowa, Iowa City, Iowa, USA
| | - Salil A Lachke
- Department of Biological Sciences, University of Delaware, Newark, Delaware, USA
- Center for Bioinformatics and Computational Biology, University of Delaware, Newark, Delaware, USA
| | - Paul A Romitti
- Department of Epidemiology, College of Public Health, University of Iowa, Iowa City, Iowa, USA
| | - Azeez Butali
- Iowa Institute of Oral Health Research, University of Iowa, Iowa City, Iowa, USA
- Department of Oral Pathology, Radiology and Medicine, College of Dentistry, University of Iowa, Iowa City, Iowa, USA
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Awotoye W, Mossey PA, Hetmanski JB, Gowans LJ, Eshete MA, Adeyemo WL, Alade A, Zeng E, Adamson O, James O, Fashina A, Ogunlewe MO, Naicker T, Adeleke C, Busch T, Li M, Petrin A, Oladayo A, Kayali S, Olotu J, Sule V, Hassan M, Pape J, Aladenika ET, Donkor P, Arthur FK, Obiri-Yeboah S, Sabbah DK, Agbenorku P, Ray D, Plange-Rhule G, Oti AA, Albokhari D, Sobreira N, Dunnwald M, Beaty TH, Taub M, Marazita ML, Adeyemo AA, Murray JC, Butali A. Damaging Mutations in AFDN Contribute to Risk of Nonsyndromic Cleft Lip With or Without Cleft Palate. Cleft Palate Craniofac J 2024; 61:697-705. [PMID: 36384317 PMCID: PMC10185709 DOI: 10.1177/10556656221135926] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Novel or rare damaging mutations have been implicated in the developmental pathogenesis of nonsyndromic cleft lip with or without cleft palate (nsCL ± P). Thus, we investigated the human genome for high-impact mutations that could explain the risk of nsCL ± P in our cohorts. We conducted next-generation sequencing (NGS) analysis of 130 nsCL ± P case-parent African trios to identify pathogenic variants that contribute to the risk of clefting. We replicated this analysis using whole-exome sequence data from a Brazilian nsCL ± P cohort. Computational analyses were then used to predict the mechanism by which these variants could result in increased risks for nsCL ± P. We discovered damaging mutations within the AFDN gene, a cell adhesion molecule (CAMs) that was previously shown to contribute to cleft palate in mice. These mutations include p.Met1164Ile, p.Thr453Asn, p.Pro1638Ala, p.Arg669Gln, p.Ala1717Val, and p.Arg1596His. We also discovered a novel splicing p.Leu1588Leu mutation in this protein. Computational analysis suggests that these amino acid changes affect the interactions with other cleft-associated genes including nectins (PVRL1, PVRL2, PVRL3, and PVRL4) CDH1, CTNNA1, and CTNND1. This is the first report on the contribution of AFDN to the risk for nsCL ± P in humans. AFDN encodes AFADIN, an important CAM that forms calcium-independent complexes with nectins 1 and 4 (encoded by the genes PVRL1 and PVRL4). This discovery shows the power of NGS analysis of multiethnic cleft samples in combination with a computational approach in the understanding of the pathogenesis of nsCL ± P.
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Affiliation(s)
- Waheed Awotoye
- Iowa Institute for Oral Health Research, University of Iowa, Iowa City, IA, USA
- Department of Oral Pathology, Radiology and Medicine, College of Dentistry, University of Iowa, Iowa City, IA, USA
| | - Peter A. Mossey
- Department of Orthodontics, University of Dundee, Dundee, UK
| | - Jacqueline B. Hetmanski
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Lord J.J Gowans
- Department of Biochemistry and Biotechnology, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Mekonen A. Eshete
- Addis Ababa University, School Medicine, Surgical Department, Addis Ababa, Ethiopia
| | - Wasiu L. Adeyemo
- Department of Oral and Maxillofacial Surgery, University of Lagos, Lagos Nigeria
| | - Azeez Alade
- Department of Oral Pathology, Radiology and Medicine, College of Dentistry, University of Iowa, Iowa City, IA, USA
- Department of Epidemiology, College of Public Health, University of Iowa, Iowa City, IA, USA
| | - Erliang Zeng
- Division of Biostatistics and Computational Biology, College of Dentistry, University of Iowa, Iowa City, IA, USA
| | - Olawale Adamson
- Department of Oral and Maxillofacial Surgery, University of Lagos, Lagos Nigeria
| | - Olutayo James
- Department of Oral and Maxillofacial Surgery, University of Lagos, Lagos Nigeria
| | - Azeez Fashina
- Department of Oral and Maxillofacial Surgery, University of Lagos, Lagos Nigeria
| | - Modupe O Ogunlewe
- Department of Oral and Maxillofacial Surgery, University of Lagos, Lagos Nigeria
| | - Thirona Naicker
- Department of Pediatrics, University of KwaZulu-Natal, South Africa
| | - Chinyere Adeleke
- Department of Oral Pathology, Radiology and Medicine, College of Dentistry, University of Iowa, Iowa City, IA, USA
| | - Tamara Busch
- Department of Oral Pathology, Radiology and Medicine, College of Dentistry, University of Iowa, Iowa City, IA, USA
| | - Mary Li
- Department of Oral Pathology, Radiology and Medicine, College of Dentistry, University of Iowa, Iowa City, IA, USA
| | - Aline Petrin
- Iowa Institute for Oral Health Research, University of Iowa, Iowa City, IA, USA
| | - Abimbola Oladayo
- Department of Oral Pathology, Radiology and Medicine, College of Dentistry, University of Iowa, Iowa City, IA, USA
| | - Sami Kayali
- Department of Oral Pathology, Radiology and Medicine, College of Dentistry, University of Iowa, Iowa City, IA, USA
| | - Joy Olotu
- Department of Anatomy, University of Port Harcourt
| | - Veronica Sule
- Department of Operative Dentistry, College of Dentistry, University of Iowa, Iowa City, IA, USA
| | - Mohaned Hassan
- Department of Oral Pathology, Radiology and Medicine, College of Dentistry, University of Iowa, Iowa City, IA, USA
| | - John Pape
- Department of Oral Pathology, Radiology and Medicine, College of Dentistry, University of Iowa, Iowa City, IA, USA
| | - Emmanuel T. Aladenika
- Iowa Institute for Oral Health Research, University of Iowa, Iowa City, IA, USA
- Department of Oral Pathology, Radiology and Medicine, College of Dentistry, University of Iowa, Iowa City, IA, USA
| | - Peter Donkor
- Department of Surgery, School of Medicine and Dentistry, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Fareed K.N. Arthur
- Department of Biochemistry and Biotechnology, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Solomon Obiri-Yeboah
- Department of Maxillofacial Sciences, School of Medicine and Dentistry, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Daniel K. Sabbah
- Department of Child Oral Health and Orthodontics, School of Medicine and Dentistry, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Pius Agbenorku
- Department of Surgery, School of Medicine and Dentistry, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Debashree Ray
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Gyikua Plange-Rhule
- Department of Child Health, School of Medicine and Dentistry, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Alexander Acheampong Oti
- Department of Maxillofacial Sciences, School of Medicine and Dentistry, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Daniah Albokhari
- McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University
| | - Nara Sobreira
- McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University
| | | | - Terri H. Beaty
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Margaret Taub
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Mary L. Marazita
- Center for Craniofacial and Dental Genetics, Department of Oral and Craniofacial Sciences, School of Dental Medicine, and Department of Human Genetics, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, PA, USA
| | | | | | - Azeez Butali
- Iowa Institute for Oral Health Research, University of Iowa, Iowa City, IA, USA
- Department of Oral Pathology, Radiology and Medicine, College of Dentistry, University of Iowa, Iowa City, IA, USA
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Alade A, Mossey P, Awotoye W, Busch T, Oladayo A, Aladenika E, Olujitan M, Gowans JJL, Eshete MA, Adeyemo WL, Zeng E, Otterloo E, O'Rorke M, Adeyemo A, Murray JC, Cotney J, Lachke SA, Romitti P, Butali A, Wentworth E, Anand D, Naicker T. Rare Variants Analyses Suggest Novel Cleft Genes in the African Population. Res Sq 2024:rs.3.rs-3921355. [PMID: 38464065 PMCID: PMC10925394 DOI: 10.21203/rs.3.rs-3921355/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/12/2024]
Abstract
Non-syndromic orofacial clefts (NSOFCs) are common birth defects with a complex etiology. While over 60 common risk loci have been identified, they explain only a small proportion of the heritability for NSOFC. Rare variants have been implicated in the missing heritability. Thus, our study aimed to identify genes enriched with nonsynonymous rare coding variants associated with NSOFCs. Our sample included 814 non-syndromic cleft lip with or without palate (NSCL/P), 205 non-syndromic cleft palate only (NSCPO), and 2150 unrelated control children from Nigeria, Ghana, and Ethiopia. We conducted a gene-based analysis separately for each phenotype using three rare-variants collapsing models: (1) protein-altering (PA), (2) missense variants only (MO); and (3) loss of function variants only (LOFO). Subsequently, we utilized relevant transcriptomics data to evaluate associated gene expression and examined their mutation constraint using the gnomeAD database. In total, 13 genes showed suggestive associations (p = E-04). Among them, eight genes (ABCB1, ALKBH8, CENPF, CSAD, EXPH5, PDZD8, SLC16A9, and TTC28) were consistently expressed in relevant mouse and human craniofacial tissues during the formation of the face, and three genes (ABCB1, TTC28, and PDZD8) showed statistically significant mutation constraint. These findings underscore the role of rare variants in identifying candidate genes for NSOFCs. Main documents (excluding the methods section) word count: 2145.
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Oladayo AM, Odukoya O, Sule V, Molobe I, Busch T, Akodu B, Adeyemo WL, Gowans LJJ, Eshete M, Alade A, Awotoye W, Adeyemo AA, Mossey PA, Prince AER, Murray JC, Butali A. Perceptions and beliefs of community gatekeepers about genomic risk information in African cleft research. BMC Public Health 2024; 24:507. [PMID: 38365612 PMCID: PMC10873930 DOI: 10.1186/s12889-024-17987-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Accepted: 02/05/2024] [Indexed: 02/18/2024] Open
Abstract
BACKGROUND A fundamental ethical issue in African genomics research is how socio-cultural factors impact perspectives, acceptance, and utility of genomic information, especially in stigmatizing conditions like orofacial clefts (OFCs). Previous research has shown that gatekeepers (e.g., religious, political, family or community leaders) wield considerable influence on the decision-making capabilities of their members, including health issues. Thus, their perspectives can inform the design of engagement strategies and increase exposure to the benefits of genomics testing/research. This is especially important for Africans underrepresented in genomic research. Our study aims to investigate the perspectives of gatekeepers concerning genomic risk information (GRI) in the presence of OFCs in a sub-Saharan African cohort. METHODS Twenty-five focus group discussions (FGDs) consisting of 214 gatekeepers (religious, community, ethnic leaders, and traditional birth attendants) in Lagos, Nigeria, explored the opinions of participants on genomic risk information (GRI), OFC experience, and the possibility of involvement in collaborative decision-making in Lagos, Nigeria. Transcripts generated from audio recordings were coded and analyzed in NVivo using thematic analysis. RESULTS Three main themes-knowledge, beliefs, and willingness to act-emerged from exploring the perspective of gatekeepers about GRI in this group. We observed mixed opinions regarding the acceptance of GRI. Many participants believed their role is to guide and support members when they receive results; this is based on the level of trust their members have in them. However, participants felt they would need to be trained by medical experts to do this. Also, religious and cultural beliefs were crucial to determining participants' understanding of OFCs and the acceptance and utilization of GRI. CONCLUSIONS Incorporating cultural sensitivity into public engagement could help develop appropriate strategies to manage conflicting ideologies surrounding genomic information in African communities. This will allow for more widespread access to the advances in genomics research in underrepresented populations. We also recommend a synergistic relationship between community health specialists/scientists, and community leaders, including spiritual providers to better understand and utilize GRI.
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Affiliation(s)
- Abimbola M Oladayo
- Department of Oral Pathology, Radiology and Medicine, College of Dentistry, University of Iowa, Iowa City, IA, USA.
- Iowa Institute of Oral Health Research, University of Iowa, Iowa City, IA, USA.
| | - Oluwakemi Odukoya
- Department of Community Health and Primary Care, College of Medicine, University of Lagos, Lagos, Nigeria
| | - Veronica Sule
- Department of Operative Dentistry, College of Dentistry, University of Iowa, Iowa City, IA, USA
| | - Ikenna Molobe
- Department of Community Health and Primary Care, College of Medicine, University of Lagos, Lagos, Nigeria
| | - Tamara Busch
- Iowa Institute of Oral Health Research, University of Iowa, Iowa City, IA, USA
| | - Babatunde Akodu
- Department of Community Health and Primary Care, College of Medicine, University of Lagos, Lagos, Nigeria
| | - Wasiu L Adeyemo
- Department of Oral and Maxillofacial Surgery, University of Lagos, Lagos, Nigeria
| | - Lord J J Gowans
- Komfo Anokye Teaching Hospital and Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Mekonen Eshete
- School of Medicine, Department of Surgery, Addis Ababa University, Addis Ababa, Ethiopia
| | - Azeez Alade
- Department of Oral Pathology, Radiology and Medicine, College of Dentistry, University of Iowa, Iowa City, IA, USA
- Iowa Institute of Oral Health Research, University of Iowa, Iowa City, IA, USA
| | - Waheed Awotoye
- Department of Oral Pathology, Radiology and Medicine, College of Dentistry, University of Iowa, Iowa City, IA, USA
- Iowa Institute of Oral Health Research, University of Iowa, Iowa City, IA, USA
| | | | - Peter A Mossey
- Department of Orthodontics, University of Dundee, Dundee, UK
| | | | - Jeffrey C Murray
- Department of Pediatrics, University of Iowa, Iowa City, IA, USA
| | - Azeez Butali
- Department of Oral Pathology, Radiology and Medicine, College of Dentistry, University of Iowa, Iowa City, IA, USA.
- Iowa Institute of Oral Health Research, University of Iowa, Iowa City, IA, USA.
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Oladayo AM, Prochaska S, Busch T, Adeyemo WL, Gowans LJJ, Eshete M, Awotoye W, Sule V, Alade A, Adeyemo AA, Mossey PA, Prince A, Murray JC, Butali A. Parents and Provider Perspectives on the Return of Genomic Findings for Cleft Families in Africa. AJOB Empir Bioeth 2024:1-14. [PMID: 38236653 DOI: 10.1080/23294515.2024.2302993] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/21/2024]
Abstract
BACKGROUND Inadequate knowledge among health care providers (HCPs) and parents of affected children limits the understanding and utility of secondary genetic findings (SFs) in under-represented populations in genomics research. SFs arise from deep DNA sequencing done for research or diagnostic purposes and may burden patients and their families despite their potential health importance. This study aims to evaluate the perspective of both groups regarding SFs and their choices in the return of results from genetic testing in the context of orofacial clefts. METHODS Using an online survey, we evaluated the experiences of 252 HCPs and 197 parents across participating cleft clinics in Ghana and Nigeria toward the return of SFs across several domains. RESULTS Only 1.6% of the HCPs felt they had an expert understanding of when and how to incorporate genomic medicine into practice, while 50.0% agreed that all SFs should be returned to patients. About 95.4% of parents were willing to receive all the information from genetic testing (including SFs), while the majority cited physicians as their primary information source (64%). CONCLUSIONS Overall, parents and providers were aware that genetic testing could help in the clinical management of diseases. However, they cited a lack of knowledge about genomic medicine, uncertain clinical utility, and lack of available learning resources as barriers. The knowledge gained from this study will assist with developing guidelines and policies to guide providers on the return of SFs in sub-Saharan Africa and across the continent.
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Affiliation(s)
- Abimbola M Oladayo
- Department Oral Pathology, Radiology and Medicine, College of Dentistry, University of Iowa, Iowa City, Iowa, USA
- Iowa Institute of Oral Health Research, University of Iowa, Iowa City, Iowa, USA
| | - Sydney Prochaska
- Department of Global Health, College of Public Health, University of Iowa, Iowa City, Iowa, USA
| | - Tamara Busch
- Iowa Institute of Oral Health Research, University of Iowa, Iowa City, Iowa, USA
| | - Wasiu L Adeyemo
- Department of Oral and Maxillofacial Surgery, University of Lagos, Lagos, Nigeria
| | - Lord J J Gowans
- Department of Biochemistry and Biotechnology, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Mekonen Eshete
- Department of Surgery, School of Medicine, Addis Ababa University, Addis Ababa, Ethiopia
| | - Waheed Awotoye
- Department Oral Pathology, Radiology and Medicine, College of Dentistry, University of Iowa, Iowa City, Iowa, USA
- Iowa Institute of Oral Health Research, University of Iowa, Iowa City, Iowa, USA
| | - Veronica Sule
- Department of Operative Dentistry, College of Dentistry, University of Iowa, Iowa City, Iowa, USA
| | - Azeez Alade
- Department Oral Pathology, Radiology and Medicine, College of Dentistry, University of Iowa, Iowa City, Iowa, USA
- Iowa Institute of Oral Health Research, University of Iowa, Iowa City, Iowa, USA
| | | | - Peter A Mossey
- Department of Orthodontics, University of Dundee, Dundee, UK
| | - Anya Prince
- College of Law, University of Iowa, Iowa City, Iowa, USA
| | - Jeffrey C Murray
- Department of Pediatrics, University of Iowa, Iowa City, Iowa, USA
| | - Azeez Butali
- Department Oral Pathology, Radiology and Medicine, College of Dentistry, University of Iowa, Iowa City, Iowa, USA
- Iowa Institute of Oral Health Research, University of Iowa, Iowa City, Iowa, USA
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Aladenika E, Maskoen A, Awotoye W, Abdulaziz R, Alade A, Nasroen SL, Oladayo A, Busch T, Sarilita E, Butali A. Whole Exome Sequencing Identifies Damaging Variants in Indonesians with Clefts. Cleft Palate Craniofac J 2023:10556656231210085. [PMID: 37876262 DOI: 10.1177/10556656231210085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2023] Open
Abstract
OBJECTIVES The interaction between genomics, genetic and environmental factors have been implicated in non-syndromic orofacial cleft development. In the current study, we investigated the contributions of rare and novel genetic variants in known cleft genes using whole exome sequencing (WES) data of Indonesians with non-syndromic orofacial clefts. DESIGN WES was conducted on 6 individuals. Variants in their exons were called and annotated. These variants were filtered for novelty and rarity using MAF of 0 and 1%. SETTING Hospital in Indonesia. PATIENTS/PARTICIPANTS Indonesians with non-syndromic orofacial clefts. INTERVENTIONS Deleterious variants were prioritized. Pathogenic amino acid changes effect on protein structure and function were identified using HOPE. MAIN OUTCOME MEASURE(S) Rare and novel variants in known cleft genes were filtered and their deleteriousness were predicted using polyphen, SIFT and CADD. RESULTS We identified rare (MAF <1%) deleterious variants in 4 craniofacial genes namely MMACHC (rs371937044, MAF = 0.00011). SOS1 (rs190222208, MAF = 0.00045), TULP4 (rs199583035, MAF = 0.067), and MTHFD1L (rs143492706, MAF = 0.0044). MMACHC has a mouse knockout model with facial cleft and failure of palatal fusion. The individual with variant in MMACHC presented with nsCPO. CONCLUSIONS Our study provides additional evidence for the role of TULP4, SOS1, MTHFD1L and MMACHC genes in nsOFC development. This is the first time MMACHC is implicated in nsOFC development in humans.
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Affiliation(s)
- Emmanuel Aladenika
- Iowa Institute for Oral Health Research, University of Iowa, Iowa City, IA, USA
- Department of Oral Pathology, Radiology and Medicine, College of Dentistry, University of Iowa, Iowa City, IA, USA
| | - Ani Maskoen
- Faculty of Dentistry, Universitas Padjadjaran, Sumedang, West Java, Indonesia
| | - Waheed Awotoye
- Iowa Institute for Oral Health Research, University of Iowa, Iowa City, IA, USA
| | - Rasyid Abdulaziz
- Faculty of Dentistry, Universitas Padjadjaran, Sumedang, West Java, Indonesia
| | - Azeez Alade
- Iowa Institute for Oral Health Research, University of Iowa, Iowa City, IA, USA
- Department of Epidemiology, College of Public Health, University of Iowa, Iowa City, IA, USA
| | | | - Abimbola Oladayo
- Iowa Institute for Oral Health Research, University of Iowa, Iowa City, IA, USA
- Department of Oral Pathology, Radiology and Medicine, College of Dentistry, University of Iowa, Iowa City, IA, USA
| | - Tamara Busch
- Iowa Institute for Oral Health Research, University of Iowa, Iowa City, IA, USA
- Department of Oral Pathology, Radiology and Medicine, College of Dentistry, University of Iowa, Iowa City, IA, USA
| | - Erli Sarilita
- Faculty of Dentistry, Universitas Padjadjaran, Sumedang, West Java, Indonesia
| | - Azeez Butali
- Iowa Institute for Oral Health Research, University of Iowa, Iowa City, IA, USA
- Department of Oral Pathology, Radiology and Medicine, College of Dentistry, University of Iowa, Iowa City, IA, USA
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Oladayo A, Gowans LJJ, Awotoye W, Alade A, Busch T, Naicker T, Eshete MA, Adeyemo WL, Hetmanski JB, Zeng E, Adamson O, Adeleke C, Li M, Sule V, Kayali S, Olotu J, Mossey PA, Obiri‐Yeboah S, Buxo CJ, Beaty T, Taub M, Donkor P, Marazita ML, Odukoya O, Adeyemo AA, Murray JC, Prince A, Butali A. Clinically actionable secondary findings in 130 triads from sub-Saharan African families with non-syndromic orofacial clefts. Mol Genet Genomic Med 2023; 11:e2237. [PMID: 37496383 PMCID: PMC10568375 DOI: 10.1002/mgg3.2237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 05/23/2023] [Accepted: 06/28/2023] [Indexed: 07/28/2023] Open
Abstract
INTRODUCTION The frequency and implications of secondary findings (SFs) from genomic testing data have been extensively researched. However, little is known about the frequency or reporting of SFs in Africans, who are underrepresented in large-scale population genomic studies. The availability of data from the first whole-genome sequencing for orofacial clefts in an African population motivated this investigation. METHODS In total, 130 case-parent trios were analyzed for SFs within the ACMG SFv.3.0 list genes. Additionally, we filtered for four more genes (HBB, HSD32B, G6PD and ACADM). RESULTS We identified 246 unique variants in 55 genes; five variants in four genes were classified as pathogenic or likely pathogenic (P/LP). The P/LP variants were seen in 2.3% (9/390) of the subjects, a frequency higher than ~1% reported for diverse ethnicities. On the ACMG list, pathogenic variants were observed in PRKAG (p. Glu183Lys). Variants in the PALB2 (p. Glu159Ter), RYR1 (p. Arg2163Leu) and LDLR (p. Asn564Ser) genes were predicted to be LP. CONCLUSION This study provides information on the frequency and pathogenicity of SFs in an African cohort. Early risk detection will help reduce disease burden and contribute to efforts to increase knowledge of the distribution and impact of actionable genomic variants in diverse populations.
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Affiliation(s)
- Abimbola Oladayo
- Department of Oral Pathology, Radiology and Medicine, College of DentistryUniversity of IowaIowa CityIowaUSA
- Iowa Institute for Oral Health ResearchUniversity of IowaIowa CityIowaUSA
| | - Lord Jephthah Joojo Gowans
- Iowa Institute for Oral Health ResearchUniversity of IowaIowa CityIowaUSA
- Department of Biochemistry and BiotechnologyKwame Nkrumah University of Science and TechnologyKumasiGhana
| | - Waheed Awotoye
- Department of Oral Pathology, Radiology and Medicine, College of DentistryUniversity of IowaIowa CityIowaUSA
- Iowa Institute for Oral Health ResearchUniversity of IowaIowa CityIowaUSA
| | - Azeez Alade
- Department of Oral Pathology, Radiology and Medicine, College of DentistryUniversity of IowaIowa CityIowaUSA
- Department of Epidemiology, College of Public HealthUniversity of IowaIowa CityIowaUSA
| | - Tamara Busch
- Department of Oral Pathology, Radiology and Medicine, College of DentistryUniversity of IowaIowa CityIowaUSA
| | - Thirona Naicker
- Department of PediatricsUniversity of KwaZulu‐NatalPinetownSouth Africa
| | - Mekonen A. Eshete
- School Medicine, Surgical DepartmentAddis Ababa UniversityAddis AbabaEthiopia
| | - Wasiu L. Adeyemo
- Department of Oral and Maxillofacial SurgeryUniversity of LagosLagosNigeria
| | - Jacqueline B. Hetmanski
- Department of EpidemiologySchool of Public Health Johns Hopkins UniversityBaltimoreMarylandUSA
| | - Erliang Zeng
- Division of Biostatistics and Computational Biology, College of DentistryUniversity of IowaIowa CityIowaUSA
| | - Olawale Adamson
- Department of Oral and Maxillofacial SurgeryUniversity of LagosLagosNigeria
| | - Chinyere Adeleke
- Department of Oral Pathology, Radiology and Medicine, College of DentistryUniversity of IowaIowa CityIowaUSA
| | - Mary Li
- Department of Oral Pathology, Radiology and Medicine, College of DentistryUniversity of IowaIowa CityIowaUSA
| | - Veronica Sule
- Department of Operative Dentistry, College of DentistryUniversity of IowaIowa CityIowaUSA
| | - Sami Kayali
- Department of Oral Pathology, Radiology and Medicine, College of DentistryUniversity of IowaIowa CityIowaUSA
| | - Joy Olotu
- Department of AnatomyUniversity of Port HarcourtPort HarcourtNigeria
| | | | - Solomon Obiri‐Yeboah
- Department of Surgery, School of Medicine and DentistryKwame Nkrumah University of Science and TechnologyKumasiGhana
| | - Carmen J. Buxo
- Dental and Craniofacial Genomics CoreUniversity of Puerto Rico School of Dental MedicineSan JuanPuerto RicoUSA
| | - Terri Beaty
- Department of EpidemiologySchool of Public Health Johns Hopkins UniversityBaltimoreMarylandUSA
| | - Margaret Taub
- Department of EpidemiologySchool of Public Health Johns Hopkins UniversityBaltimoreMarylandUSA
| | - Peter Donkor
- Department of Surgery, School of Medicine and DentistryKwame Nkrumah University of Science and TechnologyKumasiGhana
| | - Mary L. Marazita
- Center for Craniofacial and Dental Genetics, Department of Oral and Craniofacial Sciences, School of Dental Medicine, and Department of Human Genetics, Graduate School of Public HealthUniversity of PittsburghPittsburghPennsylvaniaUSA
| | - Oluwakemi Odukoya
- Department of Community Health and Primary Care, College of MedicineUniversity of LagosLagosNigeria
| | | | | | - Anya Prince
- College of LawUniversity of IowaIowa CityIowaUSA
| | - Azeez Butali
- Department of Oral Pathology, Radiology and Medicine, College of DentistryUniversity of IowaIowa CityIowaUSA
- Iowa Institute for Oral Health ResearchUniversity of IowaIowa CityIowaUSA
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8
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Naicker T, Alade A, Adeleke C, Mossey PA, Awotoye WA, Busch T, Li M, Olotu J, Aldous C, Butali A. Novel IRF6 variant in orofacial cleft patients from Durban, South Africa. Mol Genet Genomic Med 2023; 11:e2138. [PMID: 36811272 PMCID: PMC10178789 DOI: 10.1002/mgg3.2138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Revised: 12/22/2022] [Accepted: 01/10/2023] [Indexed: 02/24/2023] Open
Abstract
BACKGROUND To date, there are over 320 variants identified in the IRF6 gene that cause Van der Woude syndrome or popliteal pterygium syndrome. We sequenced this gene in a South African orofacial cleft cohort to identify the causal IRF6 variants in our population. METHOD Saliva samples from 100 patients with syndromic and non-syndromic CL ± P were collected. Patients were recruited from the cleft clinics at two public, tertiary hospitals in Durban, South Africa (SA), namely Inkosi Albert Luthuli Central Hospital (IALCH) and KwaZulu-Natal Children's Hospital (KZNCH). We prospectively sequenced the exons of IRF6 in 100 orofacial cleft cases, and where possible, we also sequenced the parents of the individuals to determine the segregation pattern. RESULTS Two variants were identified; one novel (p.Cys114Tyr) and one known (p.Arg84His) missense variant in IRF6 gene were identified. The patient with the p.Cys114Tyr variant was non-syndromic with no clinical VWS phenotype expected of individuals with IRF6 coding variants, and the patient with the p.Arg84His had phenotypic features of popliteal pterygium syndrome. The p.Arg84His variant segregated in the family, with the father also being affected. CONCLUSIONS This study provides evidence that IRF6 variants are found in the South African population. Genetic counselling is essential for affected families, particularly in the absence of a known clinical phenotype since it helps with the plans for future pregnancies.
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Affiliation(s)
- Thirona Naicker
- Genetics, Department of PaediatricsUniversity of KwaZulu‐NatalDurbanSouth Africa
- Smile Train PartnerNew YorkNew YorkUSA
| | - Azeez Alade
- Department of Oral Pathology, Radiology and Medicine, College of DentistryUniversity of IowaIowa CityIowaUSA
| | - Chinyere Adeleke
- Department of Oral Pathology, Radiology and Medicine, College of DentistryUniversity of IowaIowa CityIowaUSA
| | - Peter A. Mossey
- Department of OrthodonticsUniversity of DundeeDundeeUK
- Smile Train Global Medical Advisory BoardUSA
| | - Waheed A. Awotoye
- Department of Oral Pathology, Radiology and Medicine, College of DentistryUniversity of IowaIowa CityIowaUSA
| | - Tamara Busch
- Department of Oral Pathology, Radiology and Medicine, College of DentistryUniversity of IowaIowa CityIowaUSA
| | - Mary Li
- Department of Oral Pathology, Radiology and Medicine, College of DentistryUniversity of IowaIowa CityIowaUSA
| | - Joy Olotu
- Department of AnatomyUniversity of Port HarcourtPort HarcourtNigeria
| | - Colleen Aldous
- School of Clinical MedicineUniversity of KwaZulu‐NatalDurbanSouth Africa
| | - Azeez Butali
- Department of Oral Pathology, Radiology and Medicine, College of DentistryUniversity of IowaIowa CityIowaUSA
- Smile Train Research and Innovation Advisory CouncilUSA
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9
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Li M, Olotu J, Buxo-Martinez CJ, Mossey PA, Anand D, Busch T, Alade A, Gowans LJJ, Eshete M, Adeyemo WL, Naicker T, Awotoye WO, Gupta S, Adeleke C, Bravo V, Huang S, Adamson OO, Toraño AM, Bello CA, Soto M, Soto M, Ledesma R, Marquez M, Cordero JF, Lopez-Del Valle LM, Salcedo MI, Debs N, Petrin A, Malloy H, Elhadi K, James O, Ogunlewe MO, Abate F, Hailu A, Mohammed I, Gravem P, Deribew M, Gesses M, Hassan M, Pape J, Obiri-Yeboah S, Arthur FKN, Oti AA, Donkor P, Marazita ML, Lachke SA, Adeyemo AA, Murray JC, Butali A. Variant analyses of candidate genes in orofacial clefts in multi-ethnic populations. Oral Dis 2022; 28:1921-1935. [PMID: 34061439 PMCID: PMC9733635 DOI: 10.1111/odi.13932] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 04/14/2021] [Accepted: 05/09/2021] [Indexed: 12/13/2022]
Abstract
OBJECTIVES Cleft lip with/without cleft palate and cleft palate only is congenital birth defects where the upper lip and/or palate fail to fuse properly during embryonic facial development. Affecting ~1.2/1000 live births worldwide, these orofacial clefts impose significant social and financial burdens on affected individuals and their families. Orofacial clefts have a complex etiology resulting from genetic variants combined with environmental covariates. Recent genome-wide association studies and whole-exome sequencing for orofacial clefts identified significant genetic associations and variants in several genes. Of these, we investigated the role of common/rare variants in SHH, RORA, MRPL53, ACVR1, and GDF11. MATERIALS AND METHODS We sequenced these five genes in 1255 multi-ethnic cleft lip with/without palate and cleft palate only samples in order to find variants that may provide potential explanations for the missing heritability of orofacial clefts. Rare and novel variants were further analyzed using in silico predictive tools. RESULTS Ninteen total variants of interest were found, with variant types including stop-gain, missense, synonymous, intronic, and splice-site variants. Of these, 3 novel missense variants were found, one in SHH, one in RORA, and one in GDF11. CONCLUSION This study provides evidence that variants in SHH, RORA, MRPL53, ACVR1, and GDF11 may contribute to risk of orofacial clefts in various populations.
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Affiliation(s)
- Mary Li
- Department of Oral Pathology, Radiology and Medicine, College of Dentistry, University of Iowa, Iowa City, IA, USA
| | - Joy Olotu
- Department of Anatomy, University of Health Sciences, University of Port Harcourt, Choba, Nigeria
| | - Carmen J Buxo-Martinez
- Dental and Craniofacial Genomics Core, University of Puerto Rico School of Dental Medicine, San Juan, PR, USA
| | - Peter A Mossey
- Department of Orthodontics, University of Dundee, Dundee, UK
| | - Deepti Anand
- Department of Biological Sciences, University of Delaware, Newark, DE, USA
| | - Tamara Busch
- Department of Oral Pathology, Radiology and Medicine, College of Dentistry, University of Iowa, Iowa City, IA, USA
| | - Azeez Alade
- Department of Oral Pathology, Radiology and Medicine, College of Dentistry, University of Iowa, Iowa City, IA, USA
| | - Lord J J Gowans
- Komfo Anokye Teaching Hospital and Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Mekonen Eshete
- College of Health Sciences, School of Medicine, Addis Ababa University, Addis Ababa, Ethiopia
| | - Wasiu L Adeyemo
- Department of Oral and Maxillofacial Surgery, College of Medicine, University of Lagos, Lagos, Nigeria
| | - Thirona Naicker
- Genetics, Department of Pediatrics, University of KwaZulu-Natal, Durban, South Africa
| | - Waheed O Awotoye
- Department of Oral Pathology, Radiology and Medicine, College of Dentistry, University of Iowa, Iowa City, IA, USA
| | - Sagar Gupta
- Department of Oral Pathology, Radiology and Medicine, College of Dentistry, University of Iowa, Iowa City, IA, USA
| | - Chinyere Adeleke
- Department of Oral Pathology, Radiology and Medicine, College of Dentistry, University of Iowa, Iowa City, IA, USA
| | - Valeria Bravo
- Dental and Craniofacial Genomics Core, University of Puerto Rico School of Dental Medicine, San Juan, PR, USA
| | - Siyong Huang
- Department of Oral Pathology, Radiology and Medicine, College of Dentistry, University of Iowa, Iowa City, IA, USA
| | - Olatunbosun O Adamson
- Department of Oral and Maxillofacial Surgery, College of Medicine, University of Lagos, Lagos, Nigeria
| | | | | | - Mairim Soto
- Dental and Craniofacial Genomics Core, University of Puerto Rico School of Dental Medicine, San Juan, PR, USA
| | - Marilyn Soto
- Dental and Craniofacial Genomics Core, University of Puerto Rico School of Dental Medicine, San Juan, PR, USA
| | - Ricardo Ledesma
- Dental and Craniofacial Genomics Core, University of Puerto Rico School of Dental Medicine, San Juan, PR, USA
| | - Myrellis Marquez
- Dental and Craniofacial Genomics Core, University of Puerto Rico School of Dental Medicine, San Juan, PR, USA
| | - Jose F Cordero
- Dental and Craniofacial Genomics Core, University of Puerto Rico School of Dental Medicine, San Juan, PR, USA
| | - Lydia M Lopez-Del Valle
- Dental and Craniofacial Genomics Core, University of Puerto Rico School of Dental Medicine, San Juan, PR, USA
| | - Maria I Salcedo
- Dental and Craniofacial Genomics Core, University of Puerto Rico School of Dental Medicine, San Juan, PR, USA
| | - Natalio Debs
- Dental and Craniofacial Genomics Core, University of Puerto Rico School of Dental Medicine, San Juan, PR, USA
| | - Aline Petrin
- Department of Orthodontics, College of Dentistry, University of Iowa, Iowa City, IA, USA
| | - Hannah Malloy
- Department of Oral Pathology, Radiology and Medicine, College of Dentistry, University of Iowa, Iowa City, IA, USA
| | - Khalid Elhadi
- Department of Oral Pathology, Radiology and Medicine, College of Dentistry, University of Iowa, Iowa City, IA, USA
| | - Olutayo James
- Department of Oral and Maxillofacial Surgery, College of Medicine, University of Lagos, Lagos, Nigeria
| | - Mobolanle O Ogunlewe
- Department of Oral and Maxillofacial Surgery, College of Medicine, University of Lagos, Lagos, Nigeria
| | - Fekir Abate
- College of Health Sciences, School of Medicine, Addis Ababa University, Addis Ababa, Ethiopia
| | - Abiye Hailu
- College of Health Sciences, School of Medicine, Addis Ababa University, Addis Ababa, Ethiopia
| | - Ibrahim Mohammed
- College of Health Sciences, School of Medicine, Addis Ababa University, Addis Ababa, Ethiopia
| | - Paul Gravem
- College of Health Sciences, School of Medicine, Addis Ababa University, Addis Ababa, Ethiopia
| | - Milliard Deribew
- College of Health Sciences, School of Medicine, Addis Ababa University, Addis Ababa, Ethiopia
| | - Mulualem Gesses
- College of Health Sciences, School of Medicine, Addis Ababa University, Addis Ababa, Ethiopia
| | - Mohaned Hassan
- Department of Oral Pathology, Radiology and Medicine, College of Dentistry, University of Iowa, Iowa City, IA, USA
| | - John Pape
- Department of Oral Pathology, Radiology and Medicine, College of Dentistry, University of Iowa, Iowa City, IA, USA
| | - Solomon Obiri-Yeboah
- Komfo Anokye Teaching Hospital and Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Fareed K N Arthur
- Komfo Anokye Teaching Hospital and Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Alexander A Oti
- Komfo Anokye Teaching Hospital and Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Peter Donkor
- Komfo Anokye Teaching Hospital and Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Mary L Marazita
- Center for Craniofacial and Dental Genetics, Departments of Oral Biology and Human Genetics, University of Pittsburgh, Pittsburgh, PA, USA
| | - Salil A Lachke
- Department of Biological Sciences, University of Delaware, Newark, DE, USA
- Center for Bioinformatics and Computational Biology, University of Delaware, Newark, DE, USA
| | - Adebowale A Adeyemo
- Department of Orthodontics, University of Dundee, Dundee, UK
- National Human Genomic Research Institute, Bethesda, MD, USA
| | - Jeffrey C Murray
- Department of Pediatrics, University of Iowa, Iowa City, IA, USA
| | - Azeez Butali
- Department of Oral Pathology, Radiology and Medicine, College of Dentistry, University of Iowa, Iowa City, IA, USA
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Naicker T, Adeleke CC, Alade A, Mossey PA, Awotoye WA, Busch TD, Li M, Olotu J, Gowans LJJ, Aldous C, Butali A. Novel GRHL3 Variants in a South African Cohort With Cleft Lip and Palate. Cleft Palate Craniofac J 2022; 59:1125-1130. [PMID: 34459660 PMCID: PMC9790085 DOI: 10.1177/10556656211038453] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
OBJECTIVE The etiology of cleft palate (CP) is poorly understood compared with that of cleft lip with or without palate (CL ± P). Recently, variants in Grainyhead like transcription factor 3 (GRHL3) were reported to be associated with a risk for CP in European and some African populations including Nigeria, Ghana, and Ethiopia. In order to identify genetic variants that may further explain the etiology of CP, we sequenced GRHL3 in a South African population to determine if rare variants in GRHL3 are associated with the presence of syndromic or nonsyndromic CP. DESIGN We sequenced the exons of GRHL3 in 100 cases and where possible, we sequenced the parents of the individuals to determine the segregation pattern and presence of de novo variants. SETTING The cleft clinics from 2 public, tertiary hospitals in Durban, South Africa (SA), namely Inkosi Albert Luthuli Central Hospital and KwaZulu-Natal Children's Hospital. PATIENTS, PARTICIPANTS One hundred patients with CL ± P and their parents. INTERVENTIONS Saliva samples were collected. MAIN OUTCOME MEASURES To ascertain the genetic variants in the GRHL3 gene in patients with CL ± P in SA. RESULTS Five variants in GRHL3 were observed; 3 were novel and 2 were known variants. The novel variants were intronic variants (c.1062 + 77A>G and c.627 + 1G>A) and missense variant (p.Asp169Gly). CONCLUSIONS This study provides further evidence that variants in GRHL3 contribute to the risk of nonsyndromic CP in African populations, specifically, in the South African population.
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Affiliation(s)
- Thirona Naicker
- Department of Paediatrics, Clinical Genetics, 72753University of KwaZulu-Natal and Inkosi Albert Luthuli Central Hospital, Durban, South Africa
- Smile Train Partner
| | - Chinyere C Adeleke
- Department of Oral Pathology, Radiology and Medicine, 573932College of Dentistry, 50699The University of Iowa, Iowa City, IA, USA
| | - Azeez Alade
- Department of Oral Pathology, Radiology and Medicine, 573932College of Dentistry, 50699The University of Iowa, Iowa City, IA, USA
| | - Peter A Mossey
- Department of Orthodontics, University of Dundee, Dundee, UK
- Smile Train Global Medical Advisory Board, USA
| | - Waheed A Awotoye
- Department of Oral Pathology, Radiology and Medicine, 573932College of Dentistry, 50699The University of Iowa, Iowa City, IA, USA
| | - Tamara D Busch
- Department of Oral Pathology, Radiology and Medicine, 573932College of Dentistry, 50699The University of Iowa, Iowa City, IA, USA
| | - Mary Li
- Department of Oral Pathology, Radiology and Medicine, 573932College of Dentistry, 50699The University of Iowa, Iowa City, IA, USA
| | - Joy Olotu
- Department of Anatomy, 327041University of Port Harcourt, Rivers State, Nigeria
| | - Lord J J Gowans
- Department of Biochemistry and Biotechnology, 98763Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Colleen Aldous
- School of Clinical Medicine, University of KwaZulu-Natal, Durban, South Africa
| | - Azeez Butali
- Department of Oral Pathology, Radiology and Medicine, 573932College of Dentistry, 50699The University of Iowa, Iowa City, IA, USA
- Smile Train Research and Innovation Advisory Council, USA
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Fashina A, Busch T, Young M, Adamson O, Awotoye W, Alade A, Adeleke C, Hassan M, Oladayo AM, Gowans LJJ, Eshete M, Naicker T, Olotu J, Adeyemo WL, Butali A. Investigating the relationship between cancer and orofacial clefts using GWAS significant loci for cancers: A case-control and case-triad study. Front Oral Health 2022; 3:915361. [PMID: 35990505 PMCID: PMC9388935 DOI: 10.3389/froh.2022.915361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Accepted: 07/15/2022] [Indexed: 11/13/2022] Open
Abstract
BackgroundSeveral population-based case-control studies have reported concurrent presentation of cancer and congenital malformations. Many associations have been made between oral clefting and cancers, though some of these results are conflicting. Some studies have reported an increased risk of cancer among 1st-degree relatives of cleft cases and vice versa, and also an excess risk of cancers of the breast, lung, and brain among those with oral clefts. This study aimed to determine if the genetic polymorphisms found in some cancers are also associated with orofacial cleft in an African cohort.MethodsThe study was a case-control and case-triad study in which cases were 400 individuals clinically diagnosed with non-syndromic cleft lip and/or palate (CL/P), while controls were 450 individuals without CL/P. Samples were obtained from three African countries while DNA extraction, PCR, and genotyping were carried out at the University of Iowa, US. Eleven SNPs in genes coding for SWI/SNF subunits and 13 GWAS significant SNPs for cancers associated with orofacial cleft were selected. Case-control analysis, transmission disequilibrium test (TDT), and DFAM to combine the parent-offspring trio data and unrelated case/control data in a single analysis were carried out using PLINK.ResultsFor the case-control analyses that included all the clefts and for the CLP subtype, none of the SNPs were statistically significant. Statistically increased risk for the following SNPs rs34775372 (p = 0.02; OR = 1.54, CI:1.07–2.22), rs55658222 (p = 0.009; OR = 2.64, CI:1.28–5.45) and rs72728755 (p = 0.02; OR=2.27, CI:1.17–4.45) was observed with the CL only sub-group. None of these were significant after Bonferoni correction. In the TDT analyses, a significantly reduced risk with rs10941679 (p = 0.003; OR = 0.43, CI:0.24–0.75) was observed and this was significant after Bonferroni correction. The rs10941679 was also significant (p = 0.003) in the DFAM analyses as well even after Bonferroni correction.ConclusionThe results from this study represent an important starting point for understanding the concurrent presentation of some cancers in orofacial clefts, and cancer risks in cleft patients. The associations observed warrant further investigation in a larger cohort and will set the stage for a more mechanistic approach toward understanding the risk for cancers in families with clefts.
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Affiliation(s)
- Azeez Fashina
- Department of Oral and Maxillofacial Surgery, University of Lagos, Lagos, Nigeria
- *Correspondence: Azeez Fashina
| | - Tamara Busch
- Department of Oral Pathology, Radiology and Medicine, College of Dentistry, University of Iowa, Iowa City, IA, United States
- Iowa Institute of Oral Health Research, University of Iowa, Iowa City, IA, United States
| | - Mary Young
- Department of Oral Pathology, Radiology and Medicine, College of Dentistry, University of Iowa, Iowa City, IA, United States
| | - Olawale Adamson
- Department of Oral and Maxillofacial Surgery, University of Lagos, Lagos, Nigeria
| | - Waheed Awotoye
- Department of Oral Pathology, Radiology and Medicine, College of Dentistry, University of Iowa, Iowa City, IA, United States
- Iowa Institute of Oral Health Research, University of Iowa, Iowa City, IA, United States
| | - Azeez Alade
- Department of Oral Pathology, Radiology and Medicine, College of Dentistry, University of Iowa, Iowa City, IA, United States
- Iowa Institute of Oral Health Research, University of Iowa, Iowa City, IA, United States
| | - Chinyere Adeleke
- Department of Oral Pathology, Radiology and Medicine, College of Dentistry, University of Iowa, Iowa City, IA, United States
| | - Mohaned Hassan
- Department of Oral Pathology, Radiology and Medicine, College of Dentistry, University of Iowa, Iowa City, IA, United States
| | - Abimbola M. Oladayo
- Iowa Institute of Oral Health Research, University of Iowa, Iowa City, IA, United States
| | - Lord J. J. Gowans
- Komfo Anokye Teaching Hospital, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Mekonen Eshete
- Department of Surgery, School of Medicine, Addis Ababa University, Addis Ababa, Ethiopia
| | - Thirona Naicker
- School of Clinical Medicine, KwaZulu-Natal University, Durban, South Africa
| | - Joy Olotu
- Department of Anatomy, University of Port Harcourt, Port Harcourt, Nigeria
| | - Wasiu L. Adeyemo
- Department of Oral and Maxillofacial Surgery, University of Lagos, Lagos, Nigeria
| | - Azeez Butali
- Department of Oral Pathology, Radiology and Medicine, College of Dentistry, University of Iowa, Iowa City, IA, United States
- Iowa Institute of Oral Health Research, University of Iowa, Iowa City, IA, United States
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Alade A, Ismail W, Nair R, Schweizer M, Awotoye W, Oladayo A, Ryckman K, Butali A. Periconceptional use of vitamin A and the risk of giving birth to a child with nonsyndromic orofacial clefts-A meta-analysis. Birth Defects Res 2022; 114:467-477. [PMID: 35357092 PMCID: PMC9321711 DOI: 10.1002/bdr2.2005] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Revised: 02/03/2022] [Accepted: 03/16/2022] [Indexed: 11/23/2022]
Abstract
BACKGROUND We conducted a meta-analysis of observational epidemiological studies to evaluate the association between periconceptional use of vitamin A and the risk of giving birth to a child with nonsyndromic orofacial clefts (NSOFCs). METHODS We carried out a systematic literature search of Embase, PubMed, Web of Science, Google Scholar, and OpenGrey from inception to June 30, 2021. Two reviewers independently evaluated the studies that met the inclusion criteria and filled out an abstraction form for each study. Study quality was assessed using the Newcastle-Ottawa Assessment Scale (NOS). Adjusted estimates were pooled with an inverse variance weighting using a random-effects model. Heterogeneity and publication bias were assessed using the Cochran's Q test and funnel plot, respectively. RESULTS A total of six case-control studies with moderate risk of bias were included. The pooled OR showed a 20% reduction in the risk of NSOFCs for periconceptional use of vitamin A which was not statistically significant (OR = .80; 95% CI .54-1.17, p = .25). For nonsyndromic cleft lip with or without cleft palate (NSCL/P), the studies were homogenous, and the pooled estimate showed a 13% risk reduction, which was significant (OR = .87; 95% CI .77-.99, p = .03). For nonsyndromic cleft palate only (NSCPO), the pooled estimate showed a 33% lower likelihood, which was not statistically significant (OR = .67; 95% CI .42-1.08, p = .10). CONCLUSION Our results suggest a possible protective effect for the periconceptional use of vitamin A on the risk of NSCL/P. This finding should be investigated further in prospective studies across multiple populations.
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Affiliation(s)
- Azeez Alade
- Department of Epidemiology, College of Public HealthUniversity of IowaIowa CityIowaUSA
- Iowa Institute of Oral Health ResearchUniversity of IowaIowa CityIowaUSA
| | - Wesam Ismail
- College of PharmacyUniversity of IowaIowa CityIowaUSA
| | - Rajeshwari Nair
- University of Iowa Hospitals and ClinicsUniversity of IowaIowa CityIowaUSA
- Center for Access and Delivery Research and EvaluationIowa City VA Health Care SystemIowa CityIowaUSA
| | - Marin Schweizer
- Department of Epidemiology, College of Public HealthUniversity of IowaIowa CityIowaUSA
- University of Iowa Hospitals and ClinicsUniversity of IowaIowa CityIowaUSA
- Center for Access and Delivery Research and EvaluationIowa City VA Health Care SystemIowa CityIowaUSA
| | - Waheed Awotoye
- Iowa Institute of Oral Health ResearchUniversity of IowaIowa CityIowaUSA
| | - Abimbola Oladayo
- Iowa Institute of Oral Health ResearchUniversity of IowaIowa CityIowaUSA
| | - Kelli Ryckman
- Department of Epidemiology, College of Public HealthUniversity of IowaIowa CityIowaUSA
| | - Azeez Butali
- Iowa Institute of Oral Health ResearchUniversity of IowaIowa CityIowaUSA
- Department of Oral Pathology, Radiology and Medicine, College of DentistryUniversity of IowaIowa CityIowaUSA
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13
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Alade A, Awotoye W, Butali A. Genetic and Epigenetic Studies in Nonsyndromic Oral Clefts. Oral Dis 2022; 28:1339-1350. [PMID: 35122708 DOI: 10.1111/odi.14146] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Revised: 01/11/2022] [Accepted: 01/20/2022] [Indexed: 11/28/2022]
Abstract
The etiology of non-syndromic oral clefts (NSOFC) is complex with genetics, genomics, epigenetics and stochastics factors playing a role. Several approaches have been applied to understand the etiology of non-syndromic oral clefts. These include linkage, candidate gene association studies, genome-wide association studies, whole genome sequencing, copy number variations and epigenetics. In this review we shared these approaches, genes and loci reported in some studies.
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Affiliation(s)
- Azeez Alade
- Department of Oral Pathology, Radiology and Medicine, College of Dentistry, University of Iowa, Iowa City, IA, USA.,Iowa Institute for Oral Health Research, University of Iowa, Iowa City, IA, USA.,Department of Epidemiology, College of Public Health, University of Iowa, Iowa City, IA, USA
| | - Waheed Awotoye
- Department of Oral Pathology, Radiology and Medicine, College of Dentistry, University of Iowa, Iowa City, IA, USA.,Iowa Institute for Oral Health Research, University of Iowa, Iowa City, IA, USA
| | - Azeez Butali
- Department of Oral Pathology, Radiology and Medicine, College of Dentistry, University of Iowa, Iowa City, IA, USA.,Iowa Institute for Oral Health Research, University of Iowa, Iowa City, IA, USA
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Naicker T, Alade A, Awotoye W, Malherbe H, Aldous C, Butali A. Systematic review on the known variants and genes associated with orofacial clefts in Africa. PAMJ-CM 2022. [DOI: 10.11604/pamj-cm.2022.9.46.31756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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15
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Awotoye W, Comnick C, Pendleton C, Zeng E, Alade A, Mossey PA, Gowans LJJ, Eshete MA, Adeyemo WL, Naicker T, Adeleke C, Busch T, Li M, Petrin A, Olotu J, Hassan M, Pape J, Miller SE, Donkor P, Anand D, Lachke SA, Marazita ML, Adeyemo AA, Murray JC, Albokhari D, Sobreira N, Butali A. Genome-wide Gene-by-Sex Interaction Studies Identify Novel Nonsyndromic Orofacial Clefts Risk Locus. J Dent Res 2021; 101:465-472. [PMID: 34689653 DOI: 10.1177/00220345211046614] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Risk loci identified through genome-wide association studies have explained about 25% of the phenotypic variations in nonsyndromic orofacial clefts (nsOFCs) on the liability scale. Despite the notable sex differences in the incidences of the different cleft types, investigation of loci for sex-specific effects has been understudied. To explore the sex-specific effects in genetic etiology of nsOFCs, we conducted a genome-wide gene × sex (GxSex) interaction study in a sub-Saharan African orofacial cleft cohort. The sample included 1,019 nonsyndromic orofacial cleft cases (814 cleft lip with or without cleft palate and 205 cleft palate only) and 2,159 controls recruited from 3 sites (Ethiopia, Ghana, and Nigeria). An additive logistic model was used to examine the joint effects of the genotype and GxSex interaction. Furthermore, we examined loci with suggestive significance (P < 1E-5) in the additive model for the effect of the GxSex interaction only. We identified a novel risk locus on chromosome 8p22 with genome-wide significant joint and GxSex interaction effects (rs2720555, p2df = 1.16E-08, pGxSex = 1.49E-09, odds ratio [OR] = 0.44, 95% CI = 0.34 to 0.57). For males, the risk of cleft lip with or without cleft palate at this locus decreases with additional copies of the minor allele (p < 0.0001, OR = 0.60, 95% CI = 0.48 to 0.74), but the effect is reversed for females (p = 0.0004, OR = 1.36, 95% CI = 1.15 to 1.60). We replicated the female-specific effect of this locus in an independent cohort (p = 0.037, OR = 1.30, 95% CI = 1.02 to 1.65), but no significant effect was found for the males (p = 0.29, OR = 0.86, 95% CI = 0.65 to 1.14). This locus is in topologically associating domain with craniofacially expressed and enriched genes during embryonic development. Rare coding mutations of some of these genes were identified in nsOFC cohorts through whole exome sequencing analysis. Our study is additional proof that genome-wide GxSex interaction analysis provides an opportunity for novel findings of loci and genes that contribute to the risk of nsOFCs.
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Affiliation(s)
- W Awotoye
- Iowa Institute for Oral Health Research, University of Iowa, Iowa City, IA, USA
| | - C Comnick
- Division of Biostatistics and Computational Biology, College of Dentistry, University of Iowa, Iowa City, IA, USA
| | - C Pendleton
- Division of Biostatistics and Computational Biology, College of Dentistry, University of Iowa, Iowa City, IA, USA
| | - E Zeng
- Division of Biostatistics and Computational Biology, College of Dentistry, University of Iowa, Iowa City, IA, USA
| | - A Alade
- Department of Oral Pathology, Radiology and Medicine, College of Dentistry, University of Iowa, Iowa City, IA, USA.,Department of Epidemiology, College of Public Health, University of Iowa, Iowa City, IA, USA
| | - P A Mossey
- Department of Orthodontics, University of Dundee, Dundee, UK
| | - L J J Gowans
- Komfo Anokye Teaching Hospital and Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - M A Eshete
- Department of Surgery, School of Medicine, Addis Ababa University, Addis Ababa, Ethiopia
| | - W L Adeyemo
- Department of Oral and Maxillofacial Surgery, University of Lagos, Lagos, Nigeria
| | - T Naicker
- Department of Pediatrics, University of KwaZulu-Natal, Durban, South Africa
| | - C Adeleke
- Department of Oral Pathology, Radiology and Medicine, College of Dentistry, University of Iowa, Iowa City, IA, USA
| | - T Busch
- Department of Oral Pathology, Radiology and Medicine, College of Dentistry, University of Iowa, Iowa City, IA, USA
| | - M Li
- Department of Oral Pathology, Radiology and Medicine, College of Dentistry, University of Iowa, Iowa City, IA, USA
| | - A Petrin
- Iowa Institute for Oral Health Research, University of Iowa, Iowa City, IA, USA
| | - J Olotu
- Department of Anatomy, University of Port Harcourt, Choba, Nigeria
| | - M Hassan
- Department of Orthodontics, University of Dundee, Dundee, UK
| | - J Pape
- Department of Oral Pathology, Radiology and Medicine, College of Dentistry, University of Iowa, Iowa City, IA, USA
| | - S E Miller
- Iowa Institute for Oral Health Research, University of Iowa, Iowa City, IA, USA
| | - P Donkor
- Department of Orthodontics, University of Dundee, Dundee, UK
| | - D Anand
- Department of Biological Sciences, University of Delaware, Newark, DE, USA
| | - S A Lachke
- Department of Biological Sciences, University of Delaware, Newark, DE, USA.,Center for Bioinformatics and Computational Biology, University of Delaware, Newark, DE, USA
| | - M L Marazita
- Center for Craniofacial and Dental Genetics, Departments of Oral Biology and Human Genetics, University of Pittsburgh, Pittsburgh, PA, USA
| | - A A Adeyemo
- National Human Genomic Research Institute, Bethesda, MD, USA
| | - J C Murray
- Department of Pediatrics, University of Iowa, Iowa City, IA, USA
| | - D Albokhari
- McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University, Baltimore, MD, USA
| | - N Sobreira
- McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University, Baltimore, MD, USA
| | - A Butali
- Iowa Institute for Oral Health Research, University of Iowa, Iowa City, IA, USA.,Department of Oral Pathology, Radiology and Medicine, College of Dentistry, University of Iowa, Iowa City, IA, USA
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Awotoye W, Li M, Olotu J, Buxo‐Martinez C, Mossey P, Anand D, Busch T, Alade A, Gowans L, Eshete M, Adeyemo W, Naicker T, Adeleke C, Bravo V, Huang S, Adamson O, Toraño A, Bello C, Soto M, Soto M, Ledesma R, Marquez M, Cordero J, Lopez‐Del Valle L, Salcedo M, Debs N, Petrin A, Malloy H, Elhadi K, Olutayo J, Ogunlewe M, Abate F, Hailu T, Mohammed I, Gravem P, Deribew M, Gesses M, Hassan M, Pape J, Obiri‐Yeboah S, Arthur F, Oti A, Donkor P, Marazita M, Lachke S, Adeyemo A, Murray J, Butali A. Variant Analyses of Candidate Genes in Orofacial Clefts in Multi‐Ethnic Populations. FASEB J 2021. [DOI: 10.1096/fasebj.2021.35.s1.03614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Waheed Awotoye
- Iowa Institute of Oral Health ResearchUniversity of IowaIowaIA
| | - Mary Li
- Department of Oral Pathology, Radiology and MedicineUniversity of IowaIowaIA
| | - Joy Olotu
- Department of AnatomyUniversity of Port HarcourtPort Harcourt
| | | | - Peter Mossey
- Department of OrthodonticsUniversity of DundeeDundee
| | - Deepti Anand
- Department of Biological SciencesUniversity of DelawareNewarkDE
| | - Tamara Busch
- Department of Oral Pathology, Radiology and MedicineUniversity of IowaIowaIA
| | - Azeez Alade
- Department of EpidemiologyCollege of Public HealthUniversity of IowaIowaIA
- 3Department of Oral Pathology, Radiology and MedicineUniversity of IowaIowaIA
| | - Lord Gowans
- Department of Biochemistry and BiotechnologyKwame Nkrumah University of Science and TechnologyKumasi
| | - Mekonen Eshete
- Surgical DepartmentAddis Ababa University, School MedicineAddis Ababa
| | - Wasiu Adeyemo
- Oral and Maxillofacial SurgeryUniversity of LagosIdiaraba
| | - Thirona Naicker
- Department of PediatricsUniversity of KwaZulu‐NatalSouth Africa
| | - Chinyere Adeleke
- Department of Oral Pathology, Radiology and MedicineUniversity of IowaIowaIA
| | - Valeria Bravo
- School of Dental MedicineUniversity of Puerto RicoPuero Rico
| | - Siyong Huang
- Department of Oral Pathology, Radiology and MedicineUniversity of IowaIowaIA
| | | | | | | | - Mairim Soto
- School of Dental MedicineUniversity of Puerto RicoPuero Rico
| | - Marilyn Soto
- School of Dental MedicineUniversity of Puerto RicoPuero Rico
| | - Ricardo Ledesma
- School of Dental MedicineUniversity of Puerto RicoPuero Rico
| | | | - Jose Cordero
- School of Dental MedicineUniversity of Puerto RicoPuero Rico
| | | | - Maria Salcedo
- School of Dental MedicineUniversity of Puerto RicoPuero Rico
| | - Natalio Debs
- School of Dental MedicineUniversity of Puerto RicoPuero Rico
| | - Aline Petrin
- Iowa Institute of Oral Health ResearchUniversity of IowaIowaIA
| | - Hannah Malloy
- Department of Oral Pathology, Radiology and MedicineUniversity of IowaIowaIA
| | - Khalid Elhadi
- Department of Oral Pathology, Radiology and MedicineUniversity of IowaIowaIA
| | - James Olutayo
- Oral and Maxillofacial SurgeryUniversity of LagosIdiaraba
| | | | - Fekir Abate
- Surgical DepartmentAddis Ababa University, School MedicineAddis Ababa
| | - Taye Hailu
- Surgical DepartmentAddis Ababa University, School MedicineAddis Ababa
| | - Ibrahim Mohammed
- Surgical DepartmentAddis Ababa University, School MedicineAddis Ababa
| | - Paul Gravem
- Surgical DepartmentAddis Ababa University, School MedicineAddis Ababa
| | - Milliard Deribew
- Surgical DepartmentAddis Ababa University, School MedicineAddis Ababa
| | - Mulualem Gesses
- Surgical DepartmentAddis Ababa University, School MedicineAddis Ababa
| | - Mohaned Hassan
- Department of Oral Pathology, Radiology and MedicineUniversity of IowaIowaIA
| | - John Pape
- Department of Oral Pathology, Radiology and MedicineUniversity of IowaIowaIA
| | - Solomon Obiri‐Yeboah
- Department of Biochemistry and BiotechnologyKwame Nkrumah University of Science and TechnologyKumasi
| | - Fareed Arthur
- Department of Biochemistry and BiotechnologyKwame Nkrumah University of Science and TechnologyKumasi
| | - Alexander Oti
- Department of Biochemistry and BiotechnologyKwame Nkrumah University of Science and TechnologyKumasi
| | - Peter Donkor
- Department of Biochemistry and BiotechnologyKwame Nkrumah University of Science and TechnologyKumasi
| | - Mary Marazita
- Department of Oral Biology and Human GeneticsUniversity of PittsburghPittsburghPA
| | - Salil Lachke
- Department of Biological SciencesUniversity of DelawareNewarkDE
| | | | | | - Azeez Butali
- Department of Oral Pathology, Radiology and MedicineUniversity of IowaIowaIA
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Alade A, Awotoye W, Oladayo A, Kayali S, Adeleke C, Busch T, Gowans L, Hassan M, Pape J, Butali A. Role of Rare Variants in Craniofacial Enhancer Regions in the Etiology of Non‐Syndromic Orofacial Clefts. FASEB J 2021. [DOI: 10.1096/fasebj.2021.35.s1.04371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Azeez Alade
- Iowa Institute of Oral Health ResearchIowa CityIA
- Department of EpidemiologyIowa Institute of Oral Health ResearchIowa CityIA
| | | | | | - Sami Kayali
- Iowa Institute of Oral Health ResearchIowa CityIA
| | | | - Tamara Busch
- Iowa Institute of Oral Health ResearchIowa CityIA
| | | | | | - John Pape
- Iowa Institute of Oral Health ResearchIowa CityIA
| | - Azeez Butali
- Iowa Institute of Oral Health ResearchIowa CityIA
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Adebayo A, Alade A, Yakubu O. GC-MS ANALYSIS OF VIBURNUM OPULUS (L) EXTRACT AND ITS TOXICITY STUDIES IN RATS. Am J Transl Res 2017. [DOI: 10.1055/s-0037-1608441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- A Adebayo
- Biochemistry and Molecular Biology Unit, Department of Biological Sciences, Covenant University, Ota, Ogun State, Nigeria
| | - A Alade
- Biochemistry and Molecular Biology Unit, Department of Biological Sciences, Covenant University, Ota, Ogun State, Nigeria
| | - O Yakubu
- Biochemistry and Molecular Biology Unit, Department of Biological Sciences, Covenant University, Ota, Ogun State, Nigeria
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