Table 1.

Clinicopathologic features of a series of 18 cases (22 samples) of DFSP, including p16/CDKN2A status

Case	Patient ID	Diagnosis^a	Sex^b/age	Location^c	PDGFB FISH^d	p16 expression	CDKN2A FISH	RB1 expression
1	DFSP-01	GCF	M/26	Groin	+	+	+	+
2	DFSP-02	DFSP	M/23	Buttock	+ (2–5)	+	+	+
3	DFSP-03	DFSP	M/34	Forehead	N/A	+	N/A	N/A
4	DFSP-04	DFSP	F/51	Buttock	+ (1–2)	+	+	+
5	DFSP-05	DFSP	F/56	Neck	+ (2–5)	+	+	+
6	DFSP-06	DFSP	F/33	R anterior thigh	−	+	+	+
7	DFSP-07	DFSP	M/27	Forehead	+ (3–5)	−	+	+
8	DFSP-08	DFSP	F/45	Neck/shoulder	+ (3–5)	N/A	+	N/A
9	DFSP-09	DFSP	M/38	Groin	+ (2–4)	+	+	+
10	DFSP-10	DFSP	M/47	Thigh	+ (2–5)	+	+	+
11	DFSP-11	DFSP	F/42	Abdominal wall	+ (1–2)	+	+	+
12	DFSP-12	Hypercellular DFSP	M/55	L anterior chest wall	+ (1–2)	−	Homozygous deletion	+
13	DFSP-12	Hypercellular DFSP	M/55	L anterior chest wall	+ (1–2)	−	Homozygous deletion	+
14	FS-DFSP-01	FS-DFSP	F/75	Chest wall	+ (1–2)	+	+	−
15	FS-DFSP-02	FS-DFSP	F/36	Abdominal wall	+ (1)	+	+	+
16	FS-DFSP-03	FS-DFSP	M/31	L lung metastasis	+	−	Homozygous deletion	+
17	FS-DFSP-03	FS-DFSP	M/34	R lung metastasis	+	−	Homozygous deletion	+
18	FS-DFSP-04	FS-DFSP	M/49	Shoulder	+ (3–5)	+	+	+
19	FS-DFSP-05	FS-DFSP	M/43	Back	+ (3–6)	+	+	−
20	FS-DFSP-05	FS-DFSP	M/44	Back	+ (3–5)	N/A	+	−
21	FS-DFSP-06	FS-DFSP	F/52	R lung metastasis	+	−	Homozygous deletion	+
22^e	FS-DFSP-06	FS-DFSP	F/53	R breast metastasis	+ (3–5)	−	Homozygous deletion	+

Abbreviation: N/A, not available.

↵^aGCF, giant cell fibroblastoma
↵^bM, male; F, female.
↵^cL, left; R, right.
↵^dPositive/negative (number of copies).
↵^eThis case corresponds to the surgical resection from which the cell line DFSP105 was established.