Table 2.

CSF results for the patients who underwent LP

	Patient 1	Patient 2	Patient 3	Patient 4	Patient 5	Patient 6
Group	PCA-pure	PCA-pure	PCA-pure	PCA-pure	PCA-motor	PCA-motor
Total tau (pg/mL)	931	Insufficient	488	660	630	566
Aβ1-42 (pg/mL)	625	105	135	343	243	205
Tau:Aβ ratio	1.49	NA	3.61	1.92	2.59	2.75

Key: CSF, cerebrospinal fluid; LP, lumbar puncture; NA, not applicable; PCA, posterior cortical atrophy.