Lilly TuneLab Logo
  • Home
  • Connect With Us
  • News
  • Products
  • Events
Lilly TuneLab Logo
Lilly TuneLab Logo
  • Home
  • Connect With Us
  • News
  • Products
  • Events

Products

Find the right model or tool for your drug discovery work.

AI/ML models and tools available now on TuneLab

Model

AbLab v1, v2

Predicts antibody developability across 22 endpoints, including stability, aggregation, and solubility, from sequence alone.

View details ↗
Model

Antibody-Antigen Binding Affinity (ΔΔG)

TuneLab’s Antibody–Antigen Binding Affinity model predicts how a specific mutation changes binding affinity between an antibody and its antigen.

View details ↗
Model

ChemLab v1, v2 Federated

Predicts ADMET and physicochemical properties to help prioritize compounds for synthesis.

View details ↗
Model

Immunogenicity Model (MHC-II Peptide Presentation)

Predicts MHC class II presentation likelihood and 9-mer binding cores for antibody peptides across 12 HLA-DRB1 alleles.

View details ↗
Model

in vivo PK (developed by insitro)

Predicts preclinical in vivo PK, including clearance and Vss, across multi species, developed by insitro for Lilly.

View details ↗
Model

NanoLab (VHH Developability)

Predicts five biophysical developability endpoints for VHH nanobody sequences to rank leads before wet lab testing.

View details ↗
Workflow

Small Molecule Computational Workflows

Configurable workflows that generate, filter, score, predict properties and rank small molecules to automate drug discovery campaigns.

View details ↗
AbLab v1, v2
Model

AbLab is Lilly TuneLab's multi-task antibody developability model. The model predicts a broad panel of biophysical developability endpoints — thermal stability, aggregation, self-interaction, hydrophobicity, non-specific binding, purity and solubility among them — directly from heavy- and light-chain sequence, with no structure required.
It is trained on Lilly's internal monoclonal antibody discovery data together with intentionally diversified antibody panels expressed and profiled at contract research organizations. It is built for antibody engineers who need to triage candidates on developability risk before committing to expression and characterization. In June, we launched AbLab v1 (version 1) with 18 endpoints, and now with this release, we have also launched AbLab v2 (version 2) with 22 endpoints. The AbLab v2 model now encodes the antibody constant region, which drives most of the performance gains on thermal stability. The sequence representation moved from a protein language model to lightweight biophysical features, which is faster and federated-training friendly. And new endpoints were added, including an expanded CRO panel and a dendritic cell internalization index.

What does the AbLab v2 model provide?
  • Predictions across 22 deployed developability endpoints spanning thermal stability, aggregation, self-interaction, hydrophobicity, polyreactivity, purity, solubility and immunogenicity risk — from sequence alone, with no structure required.

  • A conformal prediction interval on every endpoint alongside the point estimate, which is designed to contain, on average, the true label 90% of the time Intervals are calibrated per endpoint against a held-out split.

  • Improved accuracy over the previous release on every deployed endpoint, with the largest gains in thermal stability. A principal driver is that it reads the five constant-domain compartments — CH1, hinge, CH2, CH3 and CL — and embeds them alongside the variable domain, which the previous version did not; thermal unfolding transitions depend heavily on constant-domain sequence.

  • New endpoints in this release, including an expanded set of CRO-generated tasks and a dendritic cell internalization index derived from internal data, which reports on immunogenicity risk and target-independent clearance.

  • A lightweight per-residue representation based on biophysical features in place of the protein language model (PLM) used previously — matching or exceeding its accuracy while running considerably faster and remaining amenable to federated training across members.

  • Fine tuning is available for AbLab. Fine-tuning lets a member adapt the model to their own project. It builds on the shared learnings from the federated datasets, so a member can get useful predictions from a small dataset of their own. Fine-tuned models are private to the member.

Technical specifications
Modality
Monoclonal antibody — full-length, paired heavy and light chain. IgG1, IgG2 and IgG4 only.
Input format
CSV, one row per antibody, with a full-length heavy chain sequence column and a full-length light chain sequence column. Both chains are required, and the constant regions must be present — heavy-only, light-only, or variable-domain-only input is rejected.
Output format
The uploaded file returned with three columns appended per endpoint: a point estimate, plus the lower and upper bound of the conformal prediction interval.
Training data type
Lilly internal monoclonal antibody discovery data combined with intentionally diversified antibody panels expressed and profiled at two contract research organizations — approaching ten thousand unique antibodies and tens of thousands of individual measurements across dozens of developability endpoints.
Predicted endpoint(s)
Rank correlation, variance explained, and conformal interval coverage on a held-out test split for every deployed endpoint. Splits are optimized to limit sequence-identity leakage, maintain per-endpoint coverage, and preserve each assay's value distribution across splits.
Connect with us
FAQs
Should I treat the predictions as measured values?
No — treat them as rank-order predictions for triage. Each task head predicts a specific vendor's assay as run on that vendor's platform, in that assay's units, rather than the underlying biophysical property. Some endpoints explain absolute variance well; others rank reliably while explaining little. Check the per-endpoint metrics before relying on any single output. Predictions and uncertainty estimates are computational outputs intended to support variant prioritization — they are not a substitute for experimental validation.
What do the prediction intervals tell me?
Each endpoint returns a lower and upper bound alongside the point estimate, calibrated to a nominal ninety percent coverage. The intervals are studentized, so they widen where the model expects that particular prediction to be less reliable — a wide interval is a signal to weight the prediction less.
My assay isn't one of the deployed endpoints. Can I still use it?
Usually, yes. In cross-vendor testing, the deployed head matching the underlying biophysical property predicted a third party's assay well, despite the model never having seen that platform. Choose the head that matches the property you care about, which is not always the one with the matching name. Note that the same nominal assay run by different CROs does not reproduce the same rank order, so expect to calibrate.
What is the DC Internalization Index?
A prediction of how readily monocyte-derived dendritic cells take up and process the antibody, measured by a published FRET-based assay whose probe fluoresces only once the antibody has been internalized and cleaved.¹ Dendritic cell processing is the first step in the pathway that generates anti-drug antibodies, so the index reports on immunogenicity risk as well as target-independent clearance. Lower is better.
What formats and isotypes are out of scope?
AbLab covers monoclonal IgG1, IgG2 and IgG4 only. Do not apply it to other isotypes, to VHH or single-domain formats, to bispecifics or fusion proteins, or to non-antibody proteins. For VHH and other single-domain formats, use NanoLab.
What happens if my sequences contain ambiguous residue codes?
Ambiguous codes such as X, B and Z are accepted, then removed from the sequence before processing rather than causing the row to be rejected. The prediction would therefore describe a shorter sequence than the one you submitted, with the flanking residues treated as adjacent. Resolve ambiguous positions before submitting.
Reference
  • ¹Wen Y, Cahya S, Zeng W, et al. Development of a FRET-Based Assay for Analysis of mAbs Internalization and Processing by Dendritic Cells in Preclinical Immunogenicity Risk Assessment. The AAPS Journal 22, 68 (2020). doi:10.1208/s12248-020-00444-1
Contact Us

This site is intended for users who are 18 years of age or older.

Copyright © 2026 Lilly. All rights reserved.

privacyoptions.pngYour Privacy Choices
lilly_footer_logo.png
TuneLab Service-Specific TermsGlobal Terms of UseGlobal Privacy NoticeConsumer Health Privacy NoticeAccessibility StatementSitemap
Contact Us
TuneLab Service-Specific Terms
Global Terms of Use
Global Privacy Notice
Consumer Health Privacy Notice
Accessibility Statement
Sitemap

This site is intended for users who are 18 years of age or older.

Copyright © 2026 Lilly. All rights reserved.

privacyoptions.pngYour Privacy Choices
Cookie Settings
lilly_footer_logo.png