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Mutation surveyor software v 3

Manufactured by SoftGenetics
Sourced in United States

Mutation Surveyor software v.3.20 is a DNA sequence analysis tool developed by SoftGenetics. It is designed to detect and analyze mutations in DNA sequences. The software provides a user-friendly interface for visualizing and comparing DNA sequences, identifying sequence variations, and generating reports.

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16 protocols using mutation surveyor software v 3

1

Variant Validation and Confirmation in Genetic Studies

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We excluded variants with MAF > 0.5% in either the Exome Aggregation Consortium (ExAC) and/or the ICR1000 UK exome series. For the de novo analyses, we identified and validated any high-quality (as defined by OpEx18 (link)) variant in the child that was not present in either parent. We evaluated and validated all rare variants identified in the 14 genes.
We confirmed all small variants in Table S1 that were called in exomes via Sanger sequencing of M13-tagged PCR products generated from genomic DNA. We performed PCR using the QIAGEN Multiplex PCR Kit according to the manufacturer’s instructions. We sequenced PCR products using M13 sequencing primers, the BigDye Terminator Cycle Sequencing Kit, and an ABI 3730 Genetic Analyzer (Applied Biosystems). We analyzed sequences using Mutation Surveyor software v.3.20 (SoftGenetics) and verified the outputs by manual inspection by two individuals, independently.
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2

PCR Product Purification and Sequencing

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PCR products were enzymatically purified to remove residual primers and dNTPs using Illustra ExoProStar (GE Lifesciences) following the manufacturer's instructions. All sequencing reactions were carried out using the BigDye Terminator v.1.1 Cycle Sequencing Kit and were performed on a 3730 Genetic Analyzer (Life Technologies Ltd., Paisley, UK) according to the manufacturer's instructions. The sequencing data was analysed with reference to a control sequence trace using Mutation Surveyor software v.3.20 (SoftGenetics LLC, State College, PA, USA).
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3

TP53 Gene Mutation Profiling

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Genomic DNA was extracted using proteinase K digestion followed by phenol/chloroform extraction as described by manufacture's recommendations. Primer sequences, product lengths and PCR conditions for the 11 exons of TP53 were retrieved from the IARC TP53 website [20] (link). Sanger sequencing was performed using the BigDye Terminator v3.1 Cycle Sequencing Kit (Applied Biosystems) according to the manufacturer's protocol using an ABI PRISM 3130 Genetic Analyzer (Applied Biosystems). Sequences were analysed using Mutation Surveyor software v3.20 (SoftGenetics).
Samples negative for TP53 mutations by Sanger sequencing were deep-sequenced to detect mutations present in a minority cell population. Indexed libraries of the PCR products were prepared using the Illumina Nextera XT kit with supplied protocol and sequenced using an Illumina MiSeq instrument, generating 2×150 bp reads with a mean coverage of 162x. Only sequences that passed quality control were analysed further. All sequence alterations were reviewed in the Integrative Genomics Viewer (IGV) version 2.3 [25] (link) and classified as missense, nonsense frameshift, in frame duplication, in frame deletion or splicing mutations by ANNOVAR [26] (link).
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4

Validating Exome Sequencing Variants

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We used Sanger sequencing of M13 tagged-PCR products from genomic DNA to validate all variants identified in probands by exome sequencing and to confirm the absence in parental samples as appropriate. Primer hybridisation sequences used for PCR are given in Supplementary Material, Table S4. PCRs were performed using the Qiagen Multiplex PCR Kit according to the manufacturer's instructions. PCR products were sequenced using M13 sequencing primers, the BigDye Terminator Cycle Sequencing Kit and an ABI 3730 Genetic Analyser (Applied Biosystems). Sequences were analysed using Mutation Surveyor software v3.20 (SoftGenetics) and verified by manual inspection.
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5

Amplification and Sequencing of TP53 Gene

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DNA was subjected to PCR to amplify exons 5 to 9 of the TP53 gene by using the Tetrad 2 Peltier Thermal Cycler (Biorad, UK). Primers used: exon 5 forward (5 'ACGTGTGCCCTGACTTTCAAC T 3') and reverse (5' CAATCAGTGAGGAATCAGAGGC 3'). Exon 6 forward (5' TCAGATAGCGATGGTGAGCAG 3') and reverse (5' GCCACTGACAACCACCCTTA 3'). Exon 7 forward (5' AGGCGCACTGGCCTCATCTT 3') and reverse (5' GAAATCGGTAAGAGGTGGGC 3'). Exon 8 forward (5' GGAGTAGATGGAGCCTGGTTT 3') and reverse (5' GGTGATAAAAGTGAATCTGAGGC 3'). Exon 9 forward (5' GGAGACCAAGGGTGCAGTTAT 3') and reverse (5' GTTAGTTAGCTACAACCAGGAGCC 3'). Conditions for the reaction steps were an initial step of 94 0 C for 5 min followed by 35 cycles comprising of 94 0 C for 1 min for denaturation, 60 0 C for 1 min for annealing, 11 min at 72 0 C for elongation. Amplicons were prepared for sequencing using the BigDye Terminator Cycle Sequencing Kit. The products were run on an ABI automated sequencer (Applied Biosystems, CA, USA). Both DNA strands were sequenced. Mutation presence was confirmed by repeating the analysis. Sequence traces were analysed using Mutation Surveyor Software v3.20 (SoftGenetics, PA, USA).
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6

Direct Sequencing of PCR Amplicons

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Direct sequencing of PCR amplicons was carried out to confirm positive gene panel results. PCR was performed using Qiagen (Manchester, UK) master mix kit. Oligonucleotide primers for PCR amplification of targeted genomic DNA were designed using Primer3 software (http://frodo.wi.mit.edu/) and synthesised by Metabion International AG (Munich, Germany). Primer sequences are available on request. Following treatment with the Agencourt AMPure PCR purification system (Agencourt Bioscience, Beverly, Massachusetts, USA), products were sequenced using BigDye Terminator Cycle Sequencing kit (PE Applied Biosystems, Massachusetts, USA) and run on an ABI 3730xl capillary sequencer. Sequences were analysed using Mutation Surveyor software V.3.24 (SoftGenetics LLC, State College, Pennsylvania, USA).
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7

Comprehensive Genetic Analysis of APP, PSEN1, and PSEN2

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In this study, we performed a systematic analysis of the entire coding region including flanking intron sequences of the genes APP, PSEN1 and PSEN2 by direct sequencing. The target fragments were amplified by polymerase chain reaction (PCR) using intronic primers designed from genomic sequence with the Primer 3 software. PCR products were purified by Exo/SAP digestion (Exonuclease I; New England; Beverly, MA; shrimp alkaline phosphatase; Promega, San Diego, CA, USA) and directly sequenced using ABI-PRISM BigDye® Terminator v1.1 Cycle Sequencing Kit (Applied Biosystems) and the ABI-PRISM 3730 DNA Analyzer, as described by the manufacturer. Sequences were analyzed using Mutation Surveyor software v3.24 (SoftGenetics LLC, State College, PA). The primer sequences are listed in Additional file 12.
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8

Sanger Sequencing Validation of Genomic Variants

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Sanger sequencing validation was performed for all de novo, novel and low quality metric variants (depth of coverage, base quality and mapping quality). Oligonucleotide primers for PCR ampli cation of targeted variants were designed using Primer3 software (http://frodo.wi.mit.edu/) and synthesized in house. The ampli ed PCR products were sequenced using an ABI 3730xl capillary sequencer (Applied Biosystems, CA, USA) and sequences were analysed using Mutation Surveyor software V.3.24 (SoftGenetics LLC, State College, Pennsylvania, USA).
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9

Genetic Screening for Congenital Anomalies

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Using genomic DNA from affected fetuses, chromosomal microarray (CMA) testing was performed using the Affymetrix CytoScan assay platform according the manufacturer’s instructions. Given the known consanguinity, regions of homozygosity (ROH) > 2 Mb were used as surrogates of autozygosity to search for autosomal recessive causes of disease. Exome sequencing (ES), a technique for sequencing all of the protein-coding regions of the genome, using the Illumina HiSeq 2500 platform and TruSeq DNA exome capture with a ≥98% coverage of RefSeq and a >85% coverage of 20× read depth was performed. Downstream data analysis and subsequent filtering of variants by CAKUT candidate gene coordinates was performed in both families. Sanger sequencing validation was performed for identified candidate variants within homozygous regions. Oligonucleotide primers for PCR amplification of targeted variants were designed using Primer3 software (http://frodo.wi.mit.edu/ accessed on 17 May 2022) and synthesized in-house. The amplified PCR products were sequenced using an ABI 3730xl capillary sequencer (Applied Biosystems, Foster City, CA, USA), and sequences were analyzed using Mutation Surveyor software V.3.24 (SoftGenetics LLC, State College, PA, USA).
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10

Sanger Sequencing of DNMT3A Mutations

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We performed Sanger sequencing of PCR products from genomic DNA to confirm the mutations identified by exome sequencing, and to mutationally analyse the gene in the overgrowth series. We designed PCR primers to amplify the 22 coding exons and intron-exon boundaries of DNMT3A in 4 multiplex PCR reactions (Supplementary Table 1). The PCR was carried out using a Qiagen Multiplex PCR kit according to the manufacturer’s instructions. Products were sequenced with the original PCR primers or internal sequencing primers (exons 3, 6, 8, 10, 14 and 22) using the BigDye Terminator Cycle Sequencing Kit and an ABI 3730 Genetic Analyzer (Applied Biosystems, Foster City, CA,USA). Sequences were analyzed using Mutation Surveyor software v3.97 (SoftGenetics, State College, PA, USA), and verified by manual inspection. All mutations were confirmed by bidirectional sequencing of a second, independently amplified PCR product.
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