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CC BY-NC-ND 4.0 · Eur J Dent 2014; 08(04): 528-532
DOI: 10.4103/1305-7456.143637
Original Article
Dental Investigation Society

Identification of a novel heterozygous truncation mutation in exon 1 of ARHGAP29 in an Indian subject with nonsyndromic cleft lip with cleft palate

Deepak Chandrasekharan
1   Research Scholar, Human Genetics Laboratory, Central Research Facility, Sree Balaji Medical and Dental College and Hospital, Bharath University, Chennai, Tamil Nadu, India
,
Arvind Ramanathan
1   Research Scholar, Human Genetics Laboratory, Central Research Facility, Sree Balaji Medical and Dental College and Hospital, Bharath University, Chennai, Tamil Nadu, India
› Author Affiliations
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Publication History

Publication Date:
25 September 2019 (online)

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ABSTRACT

Objective: Mutations in exon 1 of ARHGAP29, a RhoA specific GTPase have been identified in North American and Filipino subjects with nonsyndromic cleft palate and cleft lip with or without cleft palate. Since the genetic status of ARHGAP29 in Indian subjects with nonsyndromic oral clefts is not known, we designed the present study to investigate the occurrence of the above mutations in them. Materials and Methods: Total genomic DNA extracted from peripheral blood of 60 subjects with nonsyndromic cleft palate and cleft lip with or without cleft palate, and equal number of control healthy subjects were amplified with primers flanking exon 1 of ARHGAP29 gene and subjected to direct sequencing. Results: Sequencing analysis identified a nonsense mutation in exon 1 of ARHGAP29 that caused substitution of lysine to stop codon at codon position 32 in a subject with nonsyndromic cleft lip with cleft palate. The mutation, however, occurred in heterozygous condition. None of the other subjects carried mutation in this region. Conclusion: The study has thus identified a rare but novel truncation mutation in ARHGAP29 gene for the first time in nonsyndromic oral clefts.

Key words:

ARHGAP29 - gene mutation - Indian population - cleft lip - cleft palate
 

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