# Expression of concern: Enhancement of anti-leukemic potential of 2-hydroxyphenyl-azo-2′-naphthol (HPAN) on MOLT-4 cells through conjugation with Cu(ii)

## TL;DR

This paper addresses concerns about a study on improving the anti-leukemic effects of HPAN through copper conjugation on MOLT-4 cells.

## Contribution

The paper raises an expression of concern regarding the validity of previously published findings on HPAN and copper conjugation.

## Key findings

- The paper questions the reliability of the original study's results.
- It highlights the need for further verification of the anti-leukemic potential claims.

## Abstract

Expression of concern for ‘Enhancement of anti-leukemic potential of 2-hydroxyphenyl-azo-2′-naphthol (HPAN) on MOLT-4 cells through conjugation with Cu(ii)’ by Tathagata Deb et al., RSC Adv., 2014, 4, 18419–18430, https://doi.org/10.1039/C3RA44765K.