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Case Reports
. 2022 Feb 3;15(1):19.
doi: 10.1186/s12920-022-01167-2.

Xq26.3-q27.1 duplication including SOX3 gene in a Chinese boy with hypopituitarism: case report and two years treatment follow up

Caiqi Du #  1 , Feiya Wang #  2 , Zhuoguang Li  1   3 , Mini Zhang  1 , Xiao Yu  1 , Yan Liang  4 , Xiaoping Luo  1
Affiliations
Case Reports

Xq26.3-q27.1 duplication including SOX3 gene in a Chinese boy with hypopituitarism: case report and two years treatment follow up

Caiqi Du et al. BMC Med Genomics. .

Abstract

Background: SOX3 is essential for pituitary development normally at the earliest stages of development. In humans, variants of SOX3 can cause X-linked hypopituitarism with various clinical manifestations, with or without mental retardation.

Case presentation: We present an 8-year-old Chinese patient with congenital hypopituitarism who had a 6.180 Mb duplication on Xq26.3q27.1 including SOX3, F9, and eight other contiguous genes. The main complains of the boy was short stature. His height was 90.1 cm (- 5.87SDS), weight 11.5 kg (- 5.25SDS). He developed growth hormone (GH) deficiency, cryptorchidism and low thyroid function. Pituitary magnetic resonance imaging revealed the pituitary dysplasia. After diagnosis, levothyroxine was given for one month first, and the thyroid function basically returned to normal, but the growth situation did not improve at all. Then recombinant human GH was given, his height, growth rate and height SDS were improved significantly in the 2 years follow-up. The level of height SDS improved from - 5.87 SDS before treatment to - 3.27 SDS after the first year of treatment and - 1.78 SDS after the second years of treatment. Gonadal function and long-term prognosis of the patient still need further observation and follow-up.

Conclusions: This is the first case of Chinese male patient with multiple hypophysis dysfunction caused by SOX3 duplication, which will expand the range of phenotypes observed in patients with duplication of SOX3.

Keywords: Case report; Hypopituitarism; Recombinant human growth hormone; SOX3 duplication; Xq26.3-q27.1 duplication.

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Conflict of interest statement

All authors declare that they have no conflict of interest.

Figures

Fig. 1
Fig. 1
Physical examination results for the 8 -year- old patient. A1, A2 Facial appearance of the patient: slightly larger ears, low ear positions, external rotation, protrusion of ear lobes, thin lips, wide nose bridge, and low forehead hairline. B1, B2 Pituitary MRI of the patient revealed pituitary dysplasia
Fig. 2
Fig. 2
Genetic Analysis diagram of the patient and his parents. The red circle shows 6.180 Mb duplication on Xq26.3q27.1 including SOX3, F9, and eight other contiguous genes. A represents the patient, B represents his father, and C represents his mother
Fig. 3
Fig. 3
Growth situation of the patient during the 2-year treatment follow-up. The blue line presents a standard growth curve of Chinese boys (2–18 years old). Red and blue dots were the patient’s height and weight during the two-year treatment, respectively
See this image and copyright information in PMC

References

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