---
library_name: pyaging
tags:
- pyaging
- aging-clock
- biology
- dna-methylation
---

# bocklandt

Package-facing one-CpG identity score: pyaging returns raw cg09809672 methylation with coefficient 1 and zero intercept. The published saliva age regression instead uses EDARADD and NPTX2, including an EDARADD-squared basis term; that published age model is not implemented.

Model weights retain the original authors' terms; the pyaging software license does not relicense them.

| | |
|---|---|
| **Predicts** | EDARADD methylation |
| **Species** | Homo sapiens |
| **Tissue** | saliva |
| **Data type** | DNA methylation |
| **Model type** | single-CpG score |
| **Year** | 2011 |

## Use with pyaging

```python
import pyaging as pya

pya.pred.predict_age(adata, ["bocklandt"])
```

Browse every clock in the [pyaging Clock Catalogue](https://pyaging.readthedocs.io).

## Citation

Bocklandt, S., Lin, W., Sehl, M.E. et al. Epigenetic predictor of age. PLoS ONE 6, e14821 (2011).

https://doi.org/10.1371/journal.pone.0014821