Table 4 Accuracy and recall (sensitivity) for cancer subtype identification (vertical search) among permanent diagnostic slides.

Tumor type	WSI count	Patient count	Majority-5		Majority-10		Majority-20
			Accuracy	Recall	Accuracy	Recall	Accuracy	Recall
Brain
GBM	851	381	91.18	91.30	87.89	90.01	88.13	89.42
LGG	841	489	89.77	89.54	88.58	90.61	89.17	91.20
Endocrine
ACC	227	56	93.83	93.39	94.27	94.71	94.71	96.92
PCPG	196	176	88.77	88.78	85.71	90.31	84.18	89.29
THCA	513	500	97.66	97.86	96.68	96.89	96.49	96.70
Gastrointestinal tract
COAD	436	428	76.14	82.00	69.72	86.00	74.31	90.00
ESCA	157	155	59.87	69.43	45.22	64.33	39.49	55.41
READ	157	156	10.19	12.20	00.63	3.66	00.00	0.61
STAD	394	369	75.12	79.19	67.76	81.73	67.00	83.25
Gynecological
UCEC	566	505	92.22	93.95	91.69	95.29	92.75	95.97
CESC	277	267	62.45	64.08	54.51	64.79	49.09	58.80
UCS	90	56	42.22	51.11	32.22	48.89	27.77	40.00
OV	106	105	66.98	67.92	59.43	67.92	51.88	62.26
Hematopoietic
DLBC	43	43	58.13	53.49	37.20	58.14	16.27	27.91
THYM	178	120	98.87	98.88	99.43	99.44	100.00	100.00
Liver, pancreaticobiliary
CHOL	39	39	43.58	43.59	25.64	35.90	02.56	17.95
LIHC	378	364	93.65	94.21	93.65	94.74	94.44	95.00
PAAD	201	182	91.04	93.53	92.03	95.02	93.03	99.00
Melanocytic malignancies
UVM	80	80	83.75	83.75	77.50	82.50	68.75	72.50
SKCM	471	429	99.57	99.58	99.57	99.79	99.57	99.79
Prostate/testis
TGCT	254	149	99.21	99.61	96.85	98.82	96.06	96.06
PRAD	447	401	98.43	98.21	98.21	98.66	98.43	98.43
Pulmonary
LUAD	520	465	70.96	71.35	63.26	72.31	64.42	72.50
MESO	86	74	08.13	12.79	02.32	8.14	00.00	1.16
LUSC	503	472	81.70	82.31	78.13	84.10	83.30	88.47
Urinary tract
BLCA	454	384	95.81	96.93	94.27	95.83	93.61	95.83
KIRC	516	511	91.66	93.02	90.11	92.44	89.53	92.64
KICH	108	108	75.92	82.41	66.66	74.07	59.25	70.37
KIRP	296	272	67.22	72.64	53.04	67.91	48.31	64.86

Only those primary sites were considered for vertical search which had at least two subtypes in the repository. A positive correlation of 0.49 was measured between the number of patients and the highest accuracy.

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