Characteristics of patients carrying P/LP heterozygous germ line variants in genes involved in autosomal recessive disorders
Patient ID . | Age/sex . | Germ line gene mutation . | VAF myeloid . | VAF germ line . | Congenital S/D . | Somatic mutation . | Cytogenetics (% abnormal metaphases) . | Hb g/dl . | ANC, ×109/L . | Plt, ×109/L . | Diagnosis . | Extrahematologic phenotype . | Family history of cancer hem/solid . | |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Mutated gene . | VAF . | |||||||||||||
PV1410 | 70/M | CSF3R∗ p.(P146fs) | 0.43 | 0.46 | SCN | JAK2 U2AF1 ZRSR2 | 0.10 0.12 0.15 | Failed | 11.6 | 1.10 | 290 | MDS/MPN | + | −/− |
PV1515 | 45/F | FANCD1 (BRCA2)∗ p.(Y2624C) | 0.44 | 0.48 | FA/HBOC | WT | Failed | 13.8 | 1.35 | 129 | ICUS | − | −/− | |
PV1949 | 25/M | FANCD1 (BRCA2)∗ p.(Y3226fs) | 0.46 | 0.52 | FA/HBOC | WT | 46XY | 15.6 | 2.7 | 131 | ICUS | + | −/− | |
PV2480 | 25/M | DNAJC21 p.(Ter577fs) | 0.53 | 0.50 | SDS | WT | 46XY | 13.2 | 0.57 | 151 | ICUS | + | −/− | |
PV30044 | 50/M | FANCD2 p.(P679fs) | 0.48 | 0.45 | FA | DNMT3A | 0.10 | 46XY | 6 | 1.12 | 44 | AML | − | +/− |
PV1174 | 38/F | SBDS c.258+2T>C† | 0.40 | 0.48 | SDS | WT | 46XX | 14.6 | 1.8 | 144 | ICUS | − | −/- | |
PV1338 | 49/M | SBDS c.258+2T>C† | 0.40 | 0.48 | SDS | ASXL1 NRAS WT1 WT1 | 0.43 0.04 0.36 0.03 | 46XY | 10.6 | 0.81 | 66 | AML | + | −/- |
PV2281 | 70/F | SBDS c.258+2T>C† | 0.41 | 0.40 | SDS | TET2 | 0.38 | 46XX; del(5q) (60) | 11.6 | 1.24 | 173 | MDS del(5q) | + | −/− |
PV2346 | 47/M | SBDS c.258+2T>C† | 0.41 | 0.41 | SDS | PHF6 SRSF2 | 0.93 0.47 | 46XY | 12.5 | 6.4 | 35 | CCUS | − | −/− |
PV2360 | 47/M | SBDS c.258+2T>C† | 0.40 | 0.40 | SDS | WT | 46XY | 12.8 | 2.5 | 209 | ICUS | − | −/+ |
Patient ID . | Age/sex . | Germ line gene mutation . | VAF myeloid . | VAF germ line . | Congenital S/D . | Somatic mutation . | Cytogenetics (% abnormal metaphases) . | Hb g/dl . | ANC, ×109/L . | Plt, ×109/L . | Diagnosis . | Extrahematologic phenotype . | Family history of cancer hem/solid . | |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Mutated gene . | VAF . | |||||||||||||
PV1410 | 70/M | CSF3R∗ p.(P146fs) | 0.43 | 0.46 | SCN | JAK2 U2AF1 ZRSR2 | 0.10 0.12 0.15 | Failed | 11.6 | 1.10 | 290 | MDS/MPN | + | −/− |
PV1515 | 45/F | FANCD1 (BRCA2)∗ p.(Y2624C) | 0.44 | 0.48 | FA/HBOC | WT | Failed | 13.8 | 1.35 | 129 | ICUS | − | −/− | |
PV1949 | 25/M | FANCD1 (BRCA2)∗ p.(Y3226fs) | 0.46 | 0.52 | FA/HBOC | WT | 46XY | 15.6 | 2.7 | 131 | ICUS | + | −/− | |
PV2480 | 25/M | DNAJC21 p.(Ter577fs) | 0.53 | 0.50 | SDS | WT | 46XY | 13.2 | 0.57 | 151 | ICUS | + | −/− | |
PV30044 | 50/M | FANCD2 p.(P679fs) | 0.48 | 0.45 | FA | DNMT3A | 0.10 | 46XY | 6 | 1.12 | 44 | AML | − | +/− |
PV1174 | 38/F | SBDS c.258+2T>C† | 0.40 | 0.48 | SDS | WT | 46XX | 14.6 | 1.8 | 144 | ICUS | − | −/- | |
PV1338 | 49/M | SBDS c.258+2T>C† | 0.40 | 0.48 | SDS | ASXL1 NRAS WT1 WT1 | 0.43 0.04 0.36 0.03 | 46XY | 10.6 | 0.81 | 66 | AML | + | −/- |
PV2281 | 70/F | SBDS c.258+2T>C† | 0.41 | 0.40 | SDS | TET2 | 0.38 | 46XX; del(5q) (60) | 11.6 | 1.24 | 173 | MDS del(5q) | + | −/− |
PV2346 | 47/M | SBDS c.258+2T>C† | 0.41 | 0.41 | SDS | PHF6 SRSF2 | 0.93 0.47 | 46XY | 12.5 | 6.4 | 35 | CCUS | − | −/− |
PV2360 | 47/M | SBDS c.258+2T>C† | 0.40 | 0.40 | SDS | WT | 46XY | 12.8 | 2.5 | 209 | ICUS | − | −/+ |
ANC, absolute neutrophil count; F, female; FA/HBOC, Fanconi anemia/hereditary breast and ovarian cancer syndrome; Hb, hemoglobin concentration; Hem, hematopoietic; M, male; MDS/MPN, MDS/myeloproliferative neoplasm; MDS del(5q), myelodysplastic syndrome with deletion of chromosome 5q; Plt, platelet count; SCN, severe congenital neutropenia; S/D, syndrome/disorder; SDS, Shwachman-Diamond syndrome; WT, wild-type; VAF, variant allele frequency.
Heterozygous CSF3R and FANCD1 (BRCA2) variants were described, associated with predisposition to hematologic malignancies.34-36
Manual revision of the BAM files on the SBDS gene and its pseudogene SBDSP1 confirmed the absence of the variant p.(K62∗) in patients heterozygous for c.258+2T>C.