122 posts
A concrete, runnable pipeline that takes FASTQ files from whole-genome and RNA sequencing through alignment, variant calling, and expression quantification, wrapped in Nextflow so it reruns cleanly.
You can collect a sample at home, but you cannot get clinical-grade whole-genome data from a benchtop device. Here is what each option produces, what the files look like, and how to analyze them yourself.
A working stack for going from a personal WGS VCF to a reviewable variant list: Ensembl VEP for annotation, slivar for filtering, InterVar for ACMG classification, and the checks that keep the whole thing from lying to you.
A practical comparison of VEP, snpEff, ANNOVAR, bcftools csq, and vcfanno for annotating a personal whole-genome VCF, with the flags we use and the failure modes that silently corrupt results.
A practical ranking framework for consumer and clinical whole genome sequencing: what coverage, platform, file formats, and data rights to demand, and how to verify what you received.
A technical comparison of consumer genotyping arrays, exomes, short-read whole genomes, and long-read sequencing, judged on the data files you receive and what you can compute from them.
A technical comparison of clinical PGx panels, psychiatry combinatorial reports, and calling star alleles from your own whole-genome data, including the tools, flags, and genes that break.
A working guide to bcftools mpileup and bcftools call on a personal 30x whole-genome BAM, including filtering, normalization, BCF versus VCF, and where this pipeline will mislead you.
An annotated alignment record from a 30x human whole-genome BAM, plus the samtools commands we use to inspect a new file and the failure modes worth checking first.
30x means an average of 30 reads covering each base of your genome, which is enough for confident germline SNV and small-indel calling across roughly 90-95% of the reference. Here is the coverage math, the files you should insist on, and the QC steps we would run before trusting a single variant.
For germline variant calling, 30x is sufficient and 100x adds little. Deep coverage pays off for mosaicism, mitochondrial heteroplasmy, structural variants, and cell-free DNA. Here is how to tell which case you are in, and what to check in your own BAM.
A practical guide to setting up the Integrative Genomics Viewer for personal whole-genome, RNA-seq, and copy-number data, including file indexing, pileup interpretation, batch scripting, and the failure modes that produce false confidence.
Ultima Genomics is a privately held sequencing company in Newark, California whose UG 100 platform uses an open silicon wafer and flow-based chemistry to push sequencing toward $1 per gigabase. Here is how the instrument works, what the output files look like, and the pipeline changes flow-based reads require.
A practical guide to obtaining your own genome sequence: what to order, what coverage and file formats to insist on, what it costs, and how to pull reference gene sequences from public databases.
A breakdown of WGS pricing by depth, platform, and deliverable, from $200 research-core genomes to $5,000 clinical reports, plus the downstream storage and compute costs nobody quotes.
A practical walkthrough for calling and filtering copy number variants from a 30x whole-genome CRAM, with the limits of what each caller can see.
A working pipeline that turns raw CNV calls from a personal genome into an annotated and prioritized table, with visual confirmation.
A practical guide to the three things people mean by genome mapping, the aligners and flags we would use on a personal whole-genome dataset, and what the compute costs.
A working pipeline for taking raw whole-genome sequencing output (FASTQ, CRAM, VCF) through quality control, annotation, and variant triage, with the specific tools, flags, and thresholds we would use and the failure modes to watch for.
A step-by-step guide to processing your own whole-genome and RNA sequencing data, and to validating the pipeline against a truth set.
A step-by-step guide to indexing a human reference, running bwa mem on 30x whole-genome FASTQs, and producing a sorted CRAM for variant calling.
A step-by-step guide to turning raw FASTQ files from whole-genome and RNA sequencing into aligned, called, annotated, and validated results on your own hardware, with the specific tools, flags, and quality thresholds we use.
A practical walkthrough of what a sequencing lab hands you, how to verify it before you trust it, and how to go from raw reads to an annotated variant table you can query yourself.
A SNP is a single base position in the genome where people carry different letters. This is how those positions get called from sequencing data, filtered, annotated, and read without over-reading them.
A practical guide to genome visualization tools for your own sequencing data, from IGV and the UCSC browser to igv.js, with the files each one needs.
A working guide to analyzing your own whole-genome sequence: the file formats, the pipeline we would run, and what the calls support.
A working guide to going from raw whole-genome reads to a filtered, annotated set of single-nucleotide variants you can query, including the tools, flags, quality checks, and the places this pipeline quietly fails.
A technical walkthrough of the NIH All of Us genomic dataset: sequencing specs, callset formats, Researcher Workbench access tiers, and what a participant receives from their own DNA.
A practical software stack that takes a personal 30x whole genome from FASTQ to annotated variants, with the failure modes that waste days.
A direct account of WGS applications, from rare-disease diagnosis to pharmacogenomics, plus the file formats, tools, and flags you need to analyze a 30x genome yourself.
A whole genome array genotypes or copy-number-profiles preselected positions across all 24 chromosomes. Here is what the platforms resolve, the file formats you get, and how the data compares to 30x whole-genome sequencing.
A working pipeline for going from a raw germline VCF to a short list of variants you can reason about: normalization, annotation, frequency and evidence filters, pharmacogenomic star alleles, and the failure modes that make most self-interpretation wrong.
What a genome analyzer is at the file level, from FASTQ to CRAM to VCF, and how to measure your own error floor against GIAB.
How to go from a whole-genome VCF to CPIC-grade star allele diplotypes for CYP2C19, CYP2D6, DPYD, TPMT and others, which callers to run, and the failure modes that make a clean-looking result wrong.
Array-based consumer kits genotype a few hundred thousand preselected sites accurately and everything else badly. If you want data you can analyze yourself, you want 30x whole-genome sequencing with FASTQ, BAM/CRAM, and gVCF returned.
A working pipeline for taking 30x PCR-free FASTQs to aligned CRAM, a filtered and annotated variant set, structural variants, and the QC numbers that tell you whether any of it is trustworthy.
A clinical whole-genome sequencing report is a short curated document about a handful of variants. The FASTQ, CRAM, and VCF behind it contain roughly four to five million. Here is what each one gives you and how to work with the data yourself.
A working pipeline that turns 30x whole-genome FASTQs into a filtered and benchmarked VCF, plus what changes when the variants are somatic.
Where polygenic tests come from, how to compute scores yourself from a VCF, and the failure modes that silently corrupt a score.
A working guide to loading your own BAM/CRAM, VCF, and RNA-seq files into IGV and igv.js: reference builds, indexing, annotation tracks, batch screenshots, and the visual checks that catch bad variant calls.
A step-by-step WGS pipeline for a single human genome: alignment with bwa-mem2, variant calling with DeepVariant, structural variants with Manta, annotation with VEP, and the QC numbers that tell you whether any of it worked.
A whole genome is every base of your DNA, read at some depth, delivered as files. Here is what the files contain, which tools to run on them, and where short-read WGS quietly fails.
A practical pipeline for taking raw whole-genome sequencing data from FASTQ to annotated variants, structural variants, pharmacogenomic diplotypes, and polygenic scores, with the QC steps that decide whether any of it means anything.
A genetic panel sequences a curated list of genes at high depth and reports variants in those genes only. Here is what that buys you, what it misses, what it costs, and how to decide between a panel and whole-genome sequencing.
What the A1298C variant is, how to pull it correctly out of a VCF or a consumer array file without getting burned by strand, and which blood measurements tell you more than the genotype does.
What a personal genome service delivers, which file formats to insist on, and the limits of interpreting a genome in a healthy person.
A plain answer to what genetic screening is, how it differs from diagnostic testing, and how to analyze a whole-genome VCF yourself: gene lists, callers, annotation, coverage failure modes, and when you need a clinician.
A moderate-penetrance cancer risk gene with a high VUS rate and a well-known set of analysis failure modes. How to find an ATM variant in your own WGS, classify it and know what the risk estimates do and do not say.
Clinical genome means two things: a sequencing test run and interpreted under lab standards, and ClinGen, the public resource that decides which genes and variants are real. Here is how both work and how to use them on your own data.
A working guide to going from raw sequencing reads to an annotated, filtered variant list you can reason about: file formats, strand conventions, QC thresholds, annotation commands, and the failure modes that produce confident nonsense.
A concrete stack for analyzing your own whole-genome data: alignment, variant calling, annotation, pharmacogenomics, and polygenic scores, with the flags, file sizes, and failure modes that matter.
A working pipeline for turning 30x whole-genome sequencing reads into an aligned, called, benchmarked, annotated and filtered variant set, plus the triage rules that keep the short list short.
A practical setup for loading your own WGS alignments, variant calls, and RNA-seq coverage into IGV and igv.js, with the indexing, reference-build, and chromosome-naming details that usually break first.
A working pipeline for taking raw whole-genome sequencing reads of your own DNA through alignment, variant calling, annotation, and a queryable table you can hand to an analysis agent.
A whole-genome sequencing sample is usually 4–10 mL of EDTA blood or a saliva kit; what comes back is 80–120 Gbp of reads, a CRAM, and a VCF with roughly 4–5 million variants. Here is how to judge the sample, the files, and the costs.
A working pipeline from FASTQ to an annotated variant list, with the QC steps and the filters that make 4.5 million variants readable.
A genome reader is really three things: the sequencer that produces reads, the aligner and variant caller that turn reads into a genome, and the browser that lets you look at it. Here is what each step produces, which tools we would run, and where they fail.
A working pipeline from FASTQ to annotated VCF for one human genome, with DeepVariant and GATK calling and benchmarking against GIAB truth sets.
A practical comparison of whole-genome and whole-exome sequencing, with the pipeline, tools, flags, and failure modes we would use to analyze either one.
The reagent cost of a 30x human genome is now in the low hundreds of dollars, but the price you pay depends on coverage, data delivery, and whether the lab is CLIA-certified. Here is the full cost stack, including storage and compute.
A step-by-step guide from raw FASTQ to an annotated variant table on your own machine, covering alignment, calling, QC thresholds and annotation.
How to tell Ensembl the database from ensemble methods in bioinformatics, then use both on your own whole-genome VCF: offline VEP annotation, plugin scores, and consensus calling across pipelines.
The three kinds of genetic testing for disease, which platform detects what, and how to work with the raw files yourself.
A step-by-step guide to taking raw whole-genome FASTQs through alignment, variant calling, validation, and annotation, with the specific tools, flags, and quality thresholds we use.
A working end-to-end path from raw FASTQ to an annotated, QC'd variant set using GATK, DeepVariant, and VEP, with the flags, file sizes, runtimes, and failure modes that matter.
What structural variants are, which callers to run on short-read and long-read whole-genome data, the flags that matter, and how to tell a real call from an alignment artifact.
A working pipeline for a personal whole genome: alignment, variant calling, annotation, and the QC steps that catch the errors most people miss. Tool names, flags, file formats, and failure modes.
A working list of the tools that matter for analyzing your own genome, transcriptome, proteome, and biomarker data, with formats, flags, and the failure modes that bite.
A practical guide to comparing whole genomes: your VCF against the reference, two callsets of the same sample, your genome against a relative's, and human against other species. Tools, flags, and the failure modes that produce fake differences.
What the five ACMG tiers mean on a BRCA report, how to pull the same calls from your own VCF, and what short-read sequencing misses.
What whole-genome screening in a healthy adult finds, what it misses, which files and tools to use, and where the interpretation gets hard enough that you need a clinician.
A working pipeline that turns 30x whole-genome FASTQ or CRAM into a filtered and annotated variant call set, with the tools and checks we would use.
A technical comparison of array-based consumer DNA tests, consumer whole-genome sequencing, and clinician-ordered panels: file formats, error modes, prices, and what to do with the raw data.
A price breakdown of array genotyping, panels, exomes, and whole genomes, what each price includes, and what you get back as files.
A technical review of consumer and clinical whole genome sequencing: coverage depth, file formats, variant calling limits, and what the data can and cannot tell you.
A working pipeline for analyzing the SNPs in your own whole-genome sequence: alignment, variant calling with DeepVariant, QC thresholds that catch real failures, annotation, and the queries worth running first.
A genome explorer is a coordinate browser plus a query layer over your own alignments and variant calls. Here is the stack we would use on a personal 30x whole genome, with the commands, file formats, and failure modes.
"Genome manager" usually means a vendor's web portal for your sequencing results. Here is what that portal does, what it hides, and how to run your own catalog of VCFs, BAMs, expression matrices, and lab panels with tools you already know.
A step-by-step guide to taking 30x WGS FASTQs from a vendor portal to an annotated, QC-checked variant call set using spot instances, bwa-mem2, DeepVariant, and Nextflow. Includes real costs, memory requirements, and the failure modes that waste a weekend.
Most consumer wellness DNA tests report array genotypes and low-evidence trait associations. Here is what a genome can and cannot tell a healthy person, which file formats and tools matter, and where the real signal is.
A practical workflow for going from an rsID to a genotype you can trust. Covers resolving coordinates, querying your VCF and checking the reads.
A step-by-step pipeline from raw FASTQ to a filtered, benchmarked VCF for a single human genome, with the tool choices, parameters, and quality checks we would use.
A step-by-step pipeline for taking a 4-5 million variant single-sample VCF and reducing it to a few dozen candidates, with the actual bcftools, ANNOVAR, and slivar commands, plus where the filters lie to you.
A comparison of the companies that will sequence or map your genome, what data each one hands back, and how to judge an offer by coverage, read length, and file deliverables rather than marketing copy.
What whole-genome sequencing results contain, which files matter, how to interpret a variant classification, and where the analysis stops and a clinician starts.
What array, exome, and whole-genome testing each measure, which files to insist on, and a concrete pipeline for calling and annotating your own variants.
What is in a VCF, how to filter it down to variants worth reading and how to read a single variant end to end. Covers the limits of a negative result.
A genome kit is worth buying only if it ships you 30x PCR-free whole-genome sequencing and the underlying files. Here is the spec sheet, the QC commands to run on delivery, and what drugstore DNA kits measure.
A genome report is a filtered summary built on top of your variant calls. Here is what goes into one, which files matter more than the PDF, and what sequencing costs in 2026.
A working pipeline for calling somatic SNVs and indels with GATK Mutect2, from BAM to annotated VCF. Covers results at low variant allele fraction.
A step-by-step guide to annotating a personal WGS VCF with Ensembl VEP. Covers cache setup, the plugin stack and consequence picking.
A practical guide to DNA analysis tools: what works on a 23andMe-style genotype file, what requires FASTQ/BAM/VCF from whole-genome sequencing, and the commands we would run at each step.
A step-by-step guide to going from raw FASTQ files to an aligned CRAM, a benchmarked variant call set, an annotated shortlist, and an RNA-seq expression table, with the actual commands, parameters, and quality thresholds we use.
A practical spec for buying whole-genome sequencing: coverage, library prep, file formats, the QC you should run yourself, and what WGS still misses.
A working stack for analyzing your own whole-genome sequencing data: alignment with BWA-MEM2 or Dragen, variant calling with DeepVariant, annotation with VEP, and interpretation limits you should respect.
A working guide to genetic testing in asymptomatic people. Covers panel versus genome, variant classes short reads miss and when a clinician is needed.
A step-by-step guide from raw FASTQ to a filtered, benchmarked and annotated single-sample VCF. Covers the tools, flags and quality numbers.
A working guide to variant interpretation software: what each layer of the stack does, which tools we would use for a personal whole genome, and where the interpretation breaks.
The All of Us Research Program stopped returning research DNA results and removed ancestry and trait reports from participant accounts. What you were given, what you never had, and how to get raw genomic data you control.
Cloning tools like SnapGene and Geneious answer a different question than personal genome analysis. A concrete stack for going from FASTQ to annotated variants, with the tools, flags, file formats, and failure modes that matter.
A working guide to array genotyping versus whole-genome sequencing, the files you get, the tools to run on them, and the failure modes that make confident-looking results wrong.
A working pipeline for taking a personal WGS VCF into R: GDS conversion, quality metrics, ancestry PCA against 1000 Genomes, variant annotation, and polygenic score computation, with the failure modes that silently corrupt each step.
A working guide to calling, normalizing, annotating, and querying SNPs from your own sequencing or array data, with the specific tools, flags, and failure modes that matter.
A practical walkthrough for taking a whole-genome VCF, keeping only the variants your caller flagged as PASS, normalizing them, and flattening the result into a table you can query. Includes the failure modes that silently drop real variants.
A practical guide to ordering whole-genome sequencing for yourself: what coverage and read length to insist on, which files to demand, how to check quality yourself, and what the data can and cannot tell you.
A working pipeline for annotating a personal whole-genome VCF: normalize with bcftools, annotate with Ensembl VEP offline, join custom datasets with vcfanno or slivar, then filter down to something you can read.
A working guide to verifying, converting and analyzing a personal 30x whole-genome file. Covers the reference build, CRAM to BAM and coverage QC.
Why array-based consumer kits cap out fast, what a 30x whole genome resolves and which files to request. Includes a pipeline for analyzing the data.
Why arrays and consumer health reports fail on rare variants, what to demand from a sequencing provider, and how to run QC and annotation on your own genome.
A technical comparison of consumer genotyping arrays, clinical panels, and whole-genome sequencing, including the raw file formats each returns and what you can do with them.
A working pipeline for analyzing your own DNA with open source tools, from array raw data to whole-genome FASTQ, including the annotation databases, the commands, and the failure modes that produce wrong answers.
A working end-to-end guide to going from FASTQ to a filtered, benchmarked VCF on a personal 30x human genome, with the specific tools, flags, reference files, and failure modes we would use.
What a WGS service delivers, what the files look like, what coverage and platform choices change, and how to tell a real provider from a reseller.
How to genotype ABO and RhD from whole-genome sequencing data, and where short reads fail. A genomic call is not a transfusion-grade answer.
A worked walkthrough of what real DNA results look like: array text files, VCF lines field by field, coverage and callability checks, annotation with VEP, and what a 'positive' result does and does not mean.
A breakdown of the genomic testing market by category — clinical labs, direct-to-consumer arrays, research-grade sequencing providers, and tumor profiling — with the file formats, coverage depths, and failure modes that decide whether the data is useful to you.
A working guide to reading, normalizing, filtering, annotating, and querying a Variant Call Format file from whole-genome sequencing, including how to get a slice of it into a spreadsheet without breaking it.
Consumer 30x WGS runs $300-600, clinical CLIA-reported WGS runs roughly $1,000-3,000 out of pocket, and the difference is depth, deliverables, and interpretation rather than sequencing chemistry. Here is how to read a price and verify what you received.
A breakdown of consumer, research-core, and clinical whole genome sequencing prices, what each tier gets you in files and coverage, and where the hidden costs sit.
A FoundMyFitness report is a literature annotation layer on top of a consumer genotyping array. Here's how to audit the underlying file, rebuild the analysis yourself, and understand where array data runs out.
A working guide to taking a 23andMe/Ancestry export or a whole-genome FASTQ, converting it to an annotated VCF, filtering it sensibly, and knowing which results are real.
A technical account of whole genome sequencing as a data product: coverage and chemistry, file formats, a pipeline we would run, and the questions a genome can and cannot answer.