PhaseLab

A reliability layer for perturbation science.

PhaseLab assesses whether experimental results from perturbation experiments will be reproducible—before you run the experiment.

The Core Insight

Spatial coherence of response landscapes predicts perturbation reliability.

Validated across 115,251 sgRNAs (6 genes):

• Correlation with outcome variance: r = -0.24 to -0.50
• Variance reduction in stable regions: 32-49%

Quick Start

pip install phaselab

Assess CRISPR Tiling Reliability

from phaselab.spatial import analyze_tiling_coherence
from phaselab.landscapes import ResponseLandscape

# Your tiling screen data
landscape = ResponseLandscape(
    coords=[100, 150, 200, 250, 300],  # Guide positions
    responses=[0.8, 0.75, 0.1, 0.82, 0.78],  # Log2 fold-changes
)

# Analyze spatial coherence
result = analyze_tiling_coherence(landscape)

# Find stable regions
for region in result.stable_regions:
    print(f"Stable: {region['start']}-{region['end']}")
    print(f"  Coherence: {region['coherence']:.3f}")
    print(f"  Recommendation: Select guides from this region")

Analyze Protein Mutational Scanning

from phaselab.protein.mutscan import MutScanLandscape, analyze_mutscan_coherence

# Your DMS data
landscape = MutScanLandscape(
    positions=residue_positions,
    effects=fitness_effects,
    protein_id="TEM1",
    protein_name="TEM-1 β-Lactamase",
)

# Find functional domains
result = analyze_mutscan_coherence(landscape)

print(f"Essential domains: {len(result.essential_regions)}")
print(f"Variable regions: {len(result.variable_regions)}")

Assess Binding Landscape Reliability

from phaselab.chem import analyze_binding_coherence, BindingLandscape

# Your binding data
landscape = BindingLandscape(
    positions=mutation_positions,
    affinities=delta_delta_g_values,
    target="ABL1",
    ligand="Imatinib",
)

# Find reliable binding determinants
result = analyze_binding_coherence(landscape)

for hotspot in result.hot_spots:
    print(f"Position {hotspot['position']}: ΔΔG={hotspot['effect']:.2f}")

What PhaseLab Is

PhaseLab Is	PhaseLab Is NOT
A reliability assessment framework	A CRISPR design tool
Domain-general (CRISPR, protein, chemistry)	A predictor of biological outcomes
Pre-experimental guidance	A replacement for validation
Honest about uncertainty	A guarantee of success

PhaseLab answers: "Can I trust the results I'll get?"

CRISPOR answers: "Which guide should I use?"

Use both. They're complementary.

Two-Stage Framework

Stage I: Feasibility (Before Tiling)

• Uses structural priors and response modeling
• Identifies candidate stable regions
• GO/NO-GO decision for experimental investment

Stage II: Resolution (With Tiling)

• Minimum 16-20 perturbations per target
• Empirically resolves stability structure
• Quantifies variance reduction

Modules

Module	Domain	Purpose
phaselab.spatial	CRISPR	Tiling screen coherence
phaselab.protein.mutscan	Protein	DMS functional domains
phaselab.protein.folding	Protein	Structure prediction QC
phaselab.chem.binding	Chemistry	Binding hot spots
phaselab.omics	Genomics	ATAC/ChIP/RNA-seq reliability
phaselab.microbio	Microbiology	TnSeq/CRISPRi essentiality
phaselab.trials.sms	Therapeutic	SMS gene therapy pipeline

Claim Levels

PhaseLab reports uncertainty honestly:

Level	Meaning	Requirements
UNKNOWN	Cannot assess	Insufficient data
EXPLORATORY	Preliminary	Structural priors only
CONTEXT_DEPENDENT	Valid in context	Single tiling dataset
STRONG_COMPUTATIONAL	High confidence	Cross-validated

Quantum Mode

For most use cases, quantum mode should be OFF (default):

from phaselab.quantum import set_quantum_mode, QuantumMode

set_quantum_mode(QuantumMode.OFF)  # Classical only (fastest, default)
set_quantum_mode(QuantumMode.AUDIT)  # Validation subset
set_quantum_mode(QuantumMode.REQUIRED)  # Research only

Rule: If a classical experiment can falsify a claim, quantum is optional.

Installation

# Basic installation
pip install phaselab

# With quantum support
pip install phaselab[quantum]

# Full installation
pip install phaselab[all]

Documentation

• API Guide - Complete API reference
• Two-Stage Framework - Methodology
• Claims and Limits - What PhaseLab guarantees
• Quantum Mode Guidance - When to use quantum
• Positioning - Why PhaseLab is not a CRISPR tool

Research Documentation

• SMS Gene Therapy - RAI1 CRISPRa trials
• Methods Paper Outline - Publication pathway
• RAI1 Tiling Spec - Wet lab protocol

Validation

Dataset	Scale	Correlation	Variance Reduction
CRISPRa tiling (6 genes)	115,251 sgRNAs	r = -0.34	42% mean
E213-E216 experiments	Multiple screens	r = -0.24 to -0.50	32-49%

Example: SMS Therapeutic Pipeline

from phaselab.trials.sms import SMSPipeline, SMSTrialConfig

# Configure pipeline
config = SMSTrialConfig(
    therapeutic_window=(0.70, 1.10),
    verbose=True,
)

# Run full assessment
pipeline = SMSPipeline(config=config)
result = pipeline.run_full_pipeline()

print(f"GO/NO-GO: {result.overall_go_nogo}")
print(f"Claim level: {result.overall_claim_level}")

# Get falsification tests for wet lab
for test in result.falsification_tests:
    print(f"Test {test['id']}: {test['name']}")

The Science

E200-E211: Guide-sequence coherence does NOT work (r ≈ 0)

E213-E216: Spatial coherence of response landscapes DOES work

The key insight:

"The guide is the probe, not the structure. Coherence measures the system's response consistency, not properties of the perturbation itself."

Citation

@software{phaselab2025,
  author = {Vaca, Dylan},
  title = {PhaseLab: A reliability layer for perturbation science},
  year = {2025},
  version = {1.0.0},
  url = {https://github.com/followthesapper/phaselab}
}

Contributing

Contributions welcome! See CONTRIBUTING.md for guidelines.

License

MIT License - see LICENSE for details.

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PhaseLab v1.0.0 - Spatial Coherence Paradigm 315 tests passing | Production ready