Table 4. Associations between SMN2 copy number, SMN2 full-length transcript, SMN protein and MHFMS.

	SMN2 copynumber	SMN2-FLtranscript	MHFMS
SMN2 copy number	N/A	No	No
SMN2-FL transcript	No	N/A	No
SMN protein	Yes*	No	No

The “SMN2 copy number” and “SMN-FL transcript” columns include the partial correlation analysis for SMA+Controls, SMA (all SMA patients), Type I, Type II, Type III, Controls. The “MHFMS” column includes the analysis for Type II, Type III and Type II+Type III with exclusion from the analysis of subjects having minimum or maximum scores.

^*Correlation was only found for the SMA group (r = 0.33, p = 0.001) and Type II group (r = 0.41, p = 0.008).