Table 1.

Clinical cohort of individuals with A91V/pLOF genotype

IDPatient informationPRF1 variant in trans to A91V (c.272 C>T)Clinical characteristicsTherapy and outcomeReference
Sex, age (at last clinical information in y)Reason for genetic testingProtein changeGenetic variantFirst clinical manifestation (age at onset)Second clinical manifestation (age at onset)Third clinical manifestation (age at onset)Information on disease triggerHSCT (age)Outcome at last clinical information (cause of death)
M, 18 HLH (≥5/8) L17Rfs∗34 c.50del HLH (≥5/8) (18 y)   None Allogeneic (19 y) Alive and well PNR 
M, 47 Other clinical symptoms R28C c.82C>T CNS inflammatory disorder (CLIPPERS) (42 y)   n/a No Alive 19  
M, 62 Other clinical symptoms P39H c.116C>A CNS inflammatory disorder (CLIPPERS) (52 y)   n/a No Alive 19  
M, 23 HLH-like systemic disease (<5/8) R54C c.160C>T HLH-like systemic disease (<5/8) (22 y)   None No Dead (HLH activity) 20  
M, 0.1 HLH-like systemic disease (<5/8) G71S c.211G>A HLH-like systemic disease (<5/8) (0.1 y)   None No Dead (HLH activity) PNR 
M, 17 (iv) HLH (≥5/8) L80fsY∗27 c.238del HLH (≥5/8), CNS-HLH (17 y)   EBV infection (17 y) Allogeneic (19 y) Alive and well PNR 
M, 21 (iv) Family screening L80fsY∗27 c.238del Disease free   n/a  Alive and well PNR 
M, 23 (iv) Family screening L80fsY∗27 c.238del Disease free   n/a  Alive and well PNR 
F, 20 HLH (≥5/8) R104C c.310C>T HLH (≥5/8) (20 y)   None Allogeneic (21 y) Dead (HSCT related) 21  
10 F, 15 HLH-like systemic disease including CNS I125T c.374T>C Recurrent episodes of fever, pancytopenia, and splenomegaly (11 y) HLH-like systemic disease (<5/8) (13 y)  None No Alive and well 22  
11 M, 25 HLH (≥5/8) G149S c.445G>A HLH (≥5/8); granuloma sinus cavernous (25 y)   None No Alive with severe sequelae PNR 
12 M, 25 HLH (≥5/8) G149S c.445G>A HLH (≥5/8) (25 y)   None  Unknown PNR 
13 F, 72 HLH (≥5/8) G149S c.445G>A Bladder carcinoma (66 y) HLH (≥5/8) (72 y) CNS-HLH (72 y) CNS-HLH triggered by EBV reactivation No Dead (MOF) 23  
14 F, 21 HLH (≥5/8) G149S c.445G>A HLH (≥5/8) (21 y) T-cell lymphoma (21 y)  Lymphoma No Dead (MOF) PNR 
15 F, 31 Family screening G149S c.445G>A Disease free   n/a  Alive and well 24  
16 F, 9 HLH-like systemic disease including CNS S150∗ c.449C>A CNS-HLH, EBV-encephalitis (8 y)   First EBV infection Allogeneic (9 y) Alive and well PNR 
17 M, 1.5 (iii) HLH (≥5/8) R177C c.529C>T HLH (≥5/8) (neonatal)   Enterovirus meningitis No Alive and well PNR 
18 M, 4 (iii) Family screening R177C c.529C>T Disease free   n/a  Alive and well PNR 
19 F, 19 HLH (≥5/8) P188L c.563C>T HLH (≥5/8) (19 y)   Nr  Unknown 7 (P10) 
20 F, 4 Other clinical symptoms P188L c.563C>T Recurrent febrile episodes, persistent neutropenia, lymphadenopathy, leg abscesses, microcephaly, and failure to thrive (3 y)   n/a No Alive with severe sequelae PNR 
21 F, 6.5 HLH-like systemic disease (<5/8) Y219∗ c.657C>A HLH-like systemic disease (<5/8) (0.2 y)   None Allogeneic (0.5 y) Alive and well PNR 
22 M, 41 Family screening G220S c.658G>A Disease free   n/a  Alive and well PNR 
23 F, 42 HLH (≥5/8) H222Q c.666C>A HLH (≥5/8) (42 y) Acute liver failure (42 y)  Nr  Unknown PNR 
24 M, 44 HLH (≥5/8) H222Q c.666C>A HLH (≥5/8) (44 y)   Nr  Unknown PNR 
25 F, 42 Family screening H222Q c.666C>A Disease free   n/a  Alive and well PNR 
26 F, 13 Other clinical symptoms R232H c.695G>A Anaplastic large cell lymphoma (13 y)   n/a  Unknown 25 (P44) 26 (P4) 
27 F, 1 HLH (≥5/8) R232H c.695G>A HLH (≥5/8) (1 y)   Mycoplasma infection (1 y) Allogeneic Unknown PNR 
28 M, 13 HLH (≥5/8) R232H c.695G>A HLH (≥5/8) (4.5 y) CNS-HLH (6 y)  EBV infection (4.5 y) Allogeneic (7 y) Alive and well PNR 
29 F, 13 (vii) HLH (≥5/8) [A91V; R232H] c.[272C>T; 695G>A] HLH (≥5/8) (13 y)   None No Dead (HLH activity) 27 (II-4) 
30 F, 13 (vii) Family screening [A91V; R232H] c.[272C>T; 695G>A] Disease free   n/a  Alive and well 27 (II-3) 
31 F, 39 (vi) Family screening [A91V; R232H] c.[272C>T; 695G>A] Disease free   n/a  Alive and well PNR 
32 M, 27 (vi) Family screening [A91V; R232H] c.[272C>T; 695G>A] Disease free   n/a  Alive and well PNR 
33 M, 1.5 Family screening [A91V; R232H] c.[272C>T; 695G>A] Disease free   n/a  Alive and well PNR 
34 Nr, 0.4 HLH (≥5/8) [C279Y; R373C] c.[836G>A; 1117C>T] HLH (≥5/8) (5 mo)   Nr  Unknown 28 (P73) 
35 F, 20 Other clinical symptoms K285del c.853_855del Granulomatous interstitial lung disease (6 y) CNS-HLH (10 y)  None Allogeneic (10 y) Alive and well PNR 
36 M, 5 HLH (≥5/8) K285del c.853_855del CNS-HLH (0.3 y)   None Allogeneic (5 y) Dead (HSCT related) PNR 
37 F, 5 HLH (≥5/8) K284_K285del 850_855del CNS-HLH (0.2 y)   CMV-infection (0.2 y) Allogeneic (2 y) Alive and well PNR 
38 F, 49 HLH (≥5/8) Q324_A437delinsP c.971_1309del HLH (≥5/8) (40 y)   EBV infection (40 y)  Unknown PNR 
39 M, 18 HLH (≥5/8) V348M c.1042G>A HLH (≥5/8) (18 y) Persisting neutropenia (18 y)  Nr  Unknown 7 (P7) 
40 M, 36 (i) HLH-like systemic disease including CNS W374∗ c.1122G>A HLH-like systemic disease including CNS (hemiplegia, somnolence, and multifocal demyelination) (22 y) HLH (≥5/8) with cushingoid features (24 y) HLH (≥5/8) (29 y) None No Dead (HLH activity with severe CNS involvement) 20,26,29  
41 F, 37 (i) HLH-like systemic disease (<5/8) W374∗ c.1122G>A HLH-like systemic disease (<5/8) (21 y) T-cell lymphoma (21 y) HLH (≥5/8) (37 y) Lymphoma (21 y) Autologous (21 y)
Allogeneic (37 y) 
Dead (HSCT related) 20,26,29  
42 F, 9 HLH (≥5/8) W374∗ c.1122G>A CNS-HLH (5 y)   EBV infection (5 y) Allogeneic (7 y) Alive and well PNR 
43 M, 0.7 HLH (≥5/8) W374∗ c.1122G>A CNS-HLH (0.3 y)   None Allogeneic (0.7 y) Unknown PNR 
44 M, 21 (v) HLH-like systemic disease including CNS W374∗ c.1122G>A HLH-like systemic disease, CNS-HLH (21 y)   None Allogeneic (22 y) Dead (HSCT related) PNR 
45 M, 55 (v) Family screening W374∗ c.1122G>A Disease free   n/a   PNR 
46 M, 43 HLH-like systemic disease (<5/8) R385W c.1153C>T HLH-like systemic disease (<5/8) (42 y)   EBV-, Aspergillus-, Klebsiella p.-infections (42 y) No Dead (infection) PNR 
47 F, 30 HLH (≥5/8) Q405∗ c.1213C>T HLH (≥5/8) (25 y) HLH (≥5/8) (27 y)  None Allogeneic (29 y) Dead (HSCT related) PNR 
48 F, 53 HLH (≥5/8) Q405∗ c.1213C>T HLH (≥5/8) (5 y)   None No Alive and well PNR 
49 F, 43 (ii) HLH (≥5/8) R410W c.1228C>T HLH (≥5/8) (43 y)   EBV infection (43 y) No Dead (MOF) 30 (II-1) 
50 F, 35 (ii) Family screening R410W c.1228C>T Disease free   n/a  Alive and well 30 (II-5) 
51 M, 81 (ii) Family screening R410W c.1228C>T Disease free for FHL2 phenotypes. Other diseases: renal (54 y), prostate (71 y), gastric carcinoma (77 y), AML (81 y)   n/a No Dead (other) 30 (I-1) 
52 F, 7 HLH (≥5/8) F421C c.1262T>G HLH-like systemic disease (<5/8) (7 y) SPTCL (7 y) Liver disease (7 y) Lymphoma (7 y) No Dead (HLH activity) 31 (P3) 26 (P3) 
IDPatient informationPRF1 variant in trans to A91V (c.272 C>T)Clinical characteristicsTherapy and outcomeReference
Sex, age (at last clinical information in y)Reason for genetic testingProtein changeGenetic variantFirst clinical manifestation (age at onset)Second clinical manifestation (age at onset)Third clinical manifestation (age at onset)Information on disease triggerHSCT (age)Outcome at last clinical information (cause of death)
M, 18 HLH (≥5/8) L17Rfs∗34 c.50del HLH (≥5/8) (18 y)   None Allogeneic (19 y) Alive and well PNR 
M, 47 Other clinical symptoms R28C c.82C>T CNS inflammatory disorder (CLIPPERS) (42 y)   n/a No Alive 19  
M, 62 Other clinical symptoms P39H c.116C>A CNS inflammatory disorder (CLIPPERS) (52 y)   n/a No Alive 19  
M, 23 HLH-like systemic disease (<5/8) R54C c.160C>T HLH-like systemic disease (<5/8) (22 y)   None No Dead (HLH activity) 20  
M, 0.1 HLH-like systemic disease (<5/8) G71S c.211G>A HLH-like systemic disease (<5/8) (0.1 y)   None No Dead (HLH activity) PNR 
M, 17 (iv) HLH (≥5/8) L80fsY∗27 c.238del HLH (≥5/8), CNS-HLH (17 y)   EBV infection (17 y) Allogeneic (19 y) Alive and well PNR 
M, 21 (iv) Family screening L80fsY∗27 c.238del Disease free   n/a  Alive and well PNR 
M, 23 (iv) Family screening L80fsY∗27 c.238del Disease free   n/a  Alive and well PNR 
F, 20 HLH (≥5/8) R104C c.310C>T HLH (≥5/8) (20 y)   None Allogeneic (21 y) Dead (HSCT related) 21  
10 F, 15 HLH-like systemic disease including CNS I125T c.374T>C Recurrent episodes of fever, pancytopenia, and splenomegaly (11 y) HLH-like systemic disease (<5/8) (13 y)  None No Alive and well 22  
11 M, 25 HLH (≥5/8) G149S c.445G>A HLH (≥5/8); granuloma sinus cavernous (25 y)   None No Alive with severe sequelae PNR 
12 M, 25 HLH (≥5/8) G149S c.445G>A HLH (≥5/8) (25 y)   None  Unknown PNR 
13 F, 72 HLH (≥5/8) G149S c.445G>A Bladder carcinoma (66 y) HLH (≥5/8) (72 y) CNS-HLH (72 y) CNS-HLH triggered by EBV reactivation No Dead (MOF) 23  
14 F, 21 HLH (≥5/8) G149S c.445G>A HLH (≥5/8) (21 y) T-cell lymphoma (21 y)  Lymphoma No Dead (MOF) PNR 
15 F, 31 Family screening G149S c.445G>A Disease free   n/a  Alive and well 24  
16 F, 9 HLH-like systemic disease including CNS S150∗ c.449C>A CNS-HLH, EBV-encephalitis (8 y)   First EBV infection Allogeneic (9 y) Alive and well PNR 
17 M, 1.5 (iii) HLH (≥5/8) R177C c.529C>T HLH (≥5/8) (neonatal)   Enterovirus meningitis No Alive and well PNR 
18 M, 4 (iii) Family screening R177C c.529C>T Disease free   n/a  Alive and well PNR 
19 F, 19 HLH (≥5/8) P188L c.563C>T HLH (≥5/8) (19 y)   Nr  Unknown 7 (P10) 
20 F, 4 Other clinical symptoms P188L c.563C>T Recurrent febrile episodes, persistent neutropenia, lymphadenopathy, leg abscesses, microcephaly, and failure to thrive (3 y)   n/a No Alive with severe sequelae PNR 
21 F, 6.5 HLH-like systemic disease (<5/8) Y219∗ c.657C>A HLH-like systemic disease (<5/8) (0.2 y)   None Allogeneic (0.5 y) Alive and well PNR 
22 M, 41 Family screening G220S c.658G>A Disease free   n/a  Alive and well PNR 
23 F, 42 HLH (≥5/8) H222Q c.666C>A HLH (≥5/8) (42 y) Acute liver failure (42 y)  Nr  Unknown PNR 
24 M, 44 HLH (≥5/8) H222Q c.666C>A HLH (≥5/8) (44 y)   Nr  Unknown PNR 
25 F, 42 Family screening H222Q c.666C>A Disease free   n/a  Alive and well PNR 
26 F, 13 Other clinical symptoms R232H c.695G>A Anaplastic large cell lymphoma (13 y)   n/a  Unknown 25 (P44) 26 (P4) 
27 F, 1 HLH (≥5/8) R232H c.695G>A HLH (≥5/8) (1 y)   Mycoplasma infection (1 y) Allogeneic Unknown PNR 
28 M, 13 HLH (≥5/8) R232H c.695G>A HLH (≥5/8) (4.5 y) CNS-HLH (6 y)  EBV infection (4.5 y) Allogeneic (7 y) Alive and well PNR 
29 F, 13 (vii) HLH (≥5/8) [A91V; R232H] c.[272C>T; 695G>A] HLH (≥5/8) (13 y)   None No Dead (HLH activity) 27 (II-4) 
30 F, 13 (vii) Family screening [A91V; R232H] c.[272C>T; 695G>A] Disease free   n/a  Alive and well 27 (II-3) 
31 F, 39 (vi) Family screening [A91V; R232H] c.[272C>T; 695G>A] Disease free   n/a  Alive and well PNR 
32 M, 27 (vi) Family screening [A91V; R232H] c.[272C>T; 695G>A] Disease free   n/a  Alive and well PNR 
33 M, 1.5 Family screening [A91V; R232H] c.[272C>T; 695G>A] Disease free   n/a  Alive and well PNR 
34 Nr, 0.4 HLH (≥5/8) [C279Y; R373C] c.[836G>A; 1117C>T] HLH (≥5/8) (5 mo)   Nr  Unknown 28 (P73) 
35 F, 20 Other clinical symptoms K285del c.853_855del Granulomatous interstitial lung disease (6 y) CNS-HLH (10 y)  None Allogeneic (10 y) Alive and well PNR 
36 M, 5 HLH (≥5/8) K285del c.853_855del CNS-HLH (0.3 y)   None Allogeneic (5 y) Dead (HSCT related) PNR 
37 F, 5 HLH (≥5/8) K284_K285del 850_855del CNS-HLH (0.2 y)   CMV-infection (0.2 y) Allogeneic (2 y) Alive and well PNR 
38 F, 49 HLH (≥5/8) Q324_A437delinsP c.971_1309del HLH (≥5/8) (40 y)   EBV infection (40 y)  Unknown PNR 
39 M, 18 HLH (≥5/8) V348M c.1042G>A HLH (≥5/8) (18 y) Persisting neutropenia (18 y)  Nr  Unknown 7 (P7) 
40 M, 36 (i) HLH-like systemic disease including CNS W374∗ c.1122G>A HLH-like systemic disease including CNS (hemiplegia, somnolence, and multifocal demyelination) (22 y) HLH (≥5/8) with cushingoid features (24 y) HLH (≥5/8) (29 y) None No Dead (HLH activity with severe CNS involvement) 20,26,29  
41 F, 37 (i) HLH-like systemic disease (<5/8) W374∗ c.1122G>A HLH-like systemic disease (<5/8) (21 y) T-cell lymphoma (21 y) HLH (≥5/8) (37 y) Lymphoma (21 y) Autologous (21 y)
Allogeneic (37 y) 
Dead (HSCT related) 20,26,29  
42 F, 9 HLH (≥5/8) W374∗ c.1122G>A CNS-HLH (5 y)   EBV infection (5 y) Allogeneic (7 y) Alive and well PNR 
43 M, 0.7 HLH (≥5/8) W374∗ c.1122G>A CNS-HLH (0.3 y)   None Allogeneic (0.7 y) Unknown PNR 
44 M, 21 (v) HLH-like systemic disease including CNS W374∗ c.1122G>A HLH-like systemic disease, CNS-HLH (21 y)   None Allogeneic (22 y) Dead (HSCT related) PNR 
45 M, 55 (v) Family screening W374∗ c.1122G>A Disease free   n/a   PNR 
46 M, 43 HLH-like systemic disease (<5/8) R385W c.1153C>T HLH-like systemic disease (<5/8) (42 y)   EBV-, Aspergillus-, Klebsiella p.-infections (42 y) No Dead (infection) PNR 
47 F, 30 HLH (≥5/8) Q405∗ c.1213C>T HLH (≥5/8) (25 y) HLH (≥5/8) (27 y)  None Allogeneic (29 y) Dead (HSCT related) PNR 
48 F, 53 HLH (≥5/8) Q405∗ c.1213C>T HLH (≥5/8) (5 y)   None No Alive and well PNR 
49 F, 43 (ii) HLH (≥5/8) R410W c.1228C>T HLH (≥5/8) (43 y)   EBV infection (43 y) No Dead (MOF) 30 (II-1) 
50 F, 35 (ii) Family screening R410W c.1228C>T Disease free   n/a  Alive and well 30 (II-5) 
51 M, 81 (ii) Family screening R410W c.1228C>T Disease free for FHL2 phenotypes. Other diseases: renal (54 y), prostate (71 y), gastric carcinoma (77 y), AML (81 y)   n/a No Dead (other) 30 (I-1) 
52 F, 7 HLH (≥5/8) F421C c.1262T>G HLH-like systemic disease (<5/8) (7 y) SPTCL (7 y) Liver disease (7 y) Lymphoma (7 y) No Dead (HLH activity) 31 (P3) 26 (P3) 

CLIPPERS, chronic lymphocytic inflammation with pontine perivascular enhancement responsive to steroids; CMV, cytomegalovirus; CNS, central nervous system; F, female; i-vii, individuals with similar signs belong to the same family; ID, patient identification number; M, male; MOF, multiorgan failure; n/a, not applicable; Nr, not reported; PNR, previously not reported; I-1, II-1, II-5, patient IDs in reference 30; II-3, II-4, patient IDs in reference 27.

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