Table I Patient and tumor characteristics of samples used in this study

Abbreviations: RM, reduction mammoplasty; M, mastectomy; E, excision; Grade, Nottingham combined histological tumor grade; LN, lymph node; ER, estrogen receptor; PR progesterone receptor; HER2, expression determined by immunohistochemistry and/or by fluorescence in situ hybridization; Pos, positive; Neg, negative.

Normal breast specimensInvasive breast cancer specimens
Sample IDCase IDAgeSpecimen typeSample IDCase IDAgeSpecimen typeTumor typeSize (cm)GradeLN statusERPRHER2
NBE1215–430RMMBE1155–264EDuctal1.12NegPosPosNeg
NBE2279–118RMMBE2153–246MDuctal1.61PosPosPosPos
NBE3224–421RMMBE3128–379MLobular52PosPosPosNeg
NBE4222–624RMMBE4171–139EDuctal2.82NegPosPosNeg
NBE5225–630RMMBE5130–254MDuctal6.52PosPosPosNeg
NBE6295–425RMMBE698–231EDuctal1.73PosPosPosNeg
NBE7320–538RMMBE7122–345MDuctal1.72NegPosPosNeg
NBE8331–822RMMBE8193–245MDuctal1.51PosPosPosNeg
NBE9335–634RMMBE9169–134MDuctal2.63PosPosPosNeg