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. 2020 Jun 8;6:21. doi: 10.1038/s41523-020-0168-9

Table 4.

Patient groups based on Allred scores and %age cells positive for ER and PgR.

Allred score %age cells positive
Group 1 ER < 6 ER ≤ 40%
ER 6 and PgR <6 ER > 40%, ≤65% and PgR ≤ 10%
Group 2 (a) ER7 or 8 and PgR <6 ER > 65% and PgR ≤ 10%
Group 2 (b) ER 6 or 7 and PgR ≥ 6 ER > 40%, ≤90% and PgR > 10%
Group 3 ER 8 and PgR ≥ 6 ER > 90% and PgR > 10%