Gradient Biotech

Overview

Microbiology workflows move from processed community data to defensible biological findings in a single study workspace. Each use case below maps a common research question to the platform capabilities, data requirements, and suggested analysis path.

Use case index

Use caseResearch questionKey capabilities
Community profilingWhich microbes are present and how abundant are they across samples?QC and database provenance, taxonomic profiling, stacked bar chart, relative abundance, prevalence
Diversity comparisonDo communities differ in diversity or composition between groups?Alpha diversity + rarefaction, alpha group significance, beta diversity (Bray-Curtis/Jaccard), PCoA, PERMANOVA + PERMDISP
Core microbiomeWhich taxa are consistent, recurring members of this community?Prevalence/abundance thresholding, interactive threshold exploration
Differential abundanceWhich taxa differ between two cohorts, accounting for compositionality?CLR or ANCOM-BC differential abundance, prevalence and effect size, BH correction
Longitudinal community analysisHow does a community change within subjects over time?Within-subject trajectories, first differences, mixed-effects trend test
Functional profilingWhat functions or pathways differ between communities?Pathway abundance, cohort comparison, measured-vs-inferred distinction
Genomic relatednessWhich isolates are genomically related, and what clusters do they form?Pairwise SNP distance, single-linkage clustering, cross-area outbreak support
Cross-area microbiomeHow do microbial features relate to host, immune, or clinical outcomes?Shared sample identity, cross-area result linking, grounded interpretation

Who these use cases serve

AudienceTypical goals
Microbiome researchersReproducible community profiling, diversity, differential abundance, and functional analysis
Infectious disease researchersLink microbial features to host response and clinical outcomes
Core facilitiesStandardized intake, parameterized pipelines, QC, provenance, and reporting
Pharma and clinical trial teamsCohort comparison, longitudinal response, and auditable microbial biomarkers

Common data requirements

Most use cases start with a microbiology study containing:

  • A feature table (taxa/ASV/OTU by sample) — the first-release ingest path
  • Sample metadata with group, site/body-site, timepoint, and treatment columns
  • A reference database and version recorded for provenance (e.g. SILVA 138.1)

Longitudinal analysis additionally needs subject and time columns in sample metadata; genomic relatedness needs a separate isolate sequence alignment rather than a feature table.

Raw-read denoising and shotgun read classification are later additions; the first release ingests processed feature and pathway tables for faster onboarding.

Choosing a starting point

If your primary data is…Start with…
A feature table with taxonomyCommunity profiling
A feature table + grouped metadataDiversity comparison
A feature table, asking "what's consistently present?"Core microbiome
Two cohorts to contrastDifferential abundance
Repeated samples per subject over timeLongitudinal community analysis
A pathway/gene-family tableFunctional profiling
An isolate sequence alignmentGenomic relatedness
Microbial + host/immune/clinical dataCross-area microbiome

What these use cases are not

These workflows support exploratory and translational research. They are not clinical diagnostic, antimicrobial-prescribing, or infection-control workflows, and they do not turn an association into a causal, diagnostic, or transmission claim. All AI interpretation outputs include research disclaimers and cite computed metrics only.