Correction to: BMC Cancer 21, 1096 (2021)

https://doi.org/10.1186/s12885-021-08790-9

Following publication of the original article [1], the authors identified an error in Fig. 2. The gene BTN3A1 has Chinese text characters, and BTN3A2, BTN3A3, BTNL2, BTNL3, BTNL8, BTNL9, BTNL10, and SKINTL are not marked.

Fig. 2
figure 1

BTNL9 Expression and prognosis in LUAD. A BTNs expression panel in LUAD tissues compared with adjacent tissues in GEPIA database. B Correlation between BTNL8 and BTNL9 expression and LUAD clinical stages, N stage, and p53 mutation in the UALCAN database (BTNL8 expression compared with LUAD clinical stages (Normal-vs-Stage1, P = 1.01E-04; Normal-vs-Stage2, P = 7.08E-03; Normal-vs-Stage3, P = 1.36E-04; Normal-vs-Stage4, P = 1.78E-08), N stage (Normalvs-N0, P = 6.56E-04; Normal-vs-N1, P = 8.27E-10; Normal-vs-N2, P = 5.96E-04; Normal-vs-N3, P = 1.97E-10; N0-vs-N1, P = 3.27E-03; N0-vs-N3, P = 6.79E-04), and p53 status (Normal-vs-T P53-Mutant, P = 1.27E-06; Normal-vs-T P53-NonMutant, P = 1.80E-03). BTNL9 expression comparison with LUAD clinical stages (Normal-vsStage1, P = 1.21E-12; Normal-vs-Stage2, P = 3.60E-13; Normal-vs-Stage3, P = 2.40E-12; Normal-vs-Stage4, P = 2.25E-12), N stage (Normal-vs-N0, P = 1.08E-12; Normal-vs-N1, P = 1.85E-12; Normal-vs-N2, P = 1.02E-12; Normal-vs-N3, P = 1.67E-12; N0-vs-N1, P = 1.02E-03; N2-vs-N3, P = 3.01E-02), and P53 status (Normal-vs-T P53-Mutant, P = 1.85E-12; Normal-vs-T P53-NonMutant, P = 4.10E-12; T P53-Mutant-vs-T P53-NonMutant, P = 1.77E-04)). C Correlation between BTNL8 and BTNL9 expression with overall survival of LUAD using GEPIA database. D Correlation between BTNL9 expression and LUAD overall survival using OncoLnc, UALCAN, and KM plotter databases. *: P-value < 0.05; **: P-value < 0.01; ***: P-value < 0.001

The corrected Fig. 2 is given below and the original article [1] has been corrected.