Essential ovarian deficiency is a confusion that is sincerely awful and bears deep rooted outcomes on fruitfulness, bone and cardiovascular wellbeing (1,2), making it all the more difficult is its event in young people. Beforehand the term untimely menopause had been utilized and observed to be erroneous; as around 50 % of ladies have discontinuous ovarian capacity and may ovulate and consider after this conclusion (1,2,3). The analysis is made when ladies more youthful than 40 years, have at least four months of amenorrhea and two serum FSH levels dismantled multi month in the menopausal range (2). Reasons for essential ovarian inadequacy in young people incorporate chromosomal variations from the norm, premutation in the FMR1 quality for delicate X, or iatrogenic from chemotherapy or radiation treatment (1). Infiltrative, irresistible procedures and pelvic medical procedure are less regular causes (1). Immune system sickness is another reason, as around 4% of ladies will have adrenal or ovarian antibodies. Still the etiology stays obscure much of the time (3). Despite the fact that advances in oncology medications have enhanced survival of youth tumor, this came to the detriment of ovarian capacity, expanding the danger of ovarian inadequacy and fruitlessness (4). Morse et. al appeared in a planned observational investigation of ovarian capacity amid tumor treatment of females matured 0 to 18 years that ovarian deficiency happened in chemotherapy treated prepubertal and pubertal patients paying little mind to menarche, age, analysis or chemotherapy given (5). Besides, females getting radiotherapy underneath the stomach and additionally foundational microorganism transplant (SCT) had no recuperation in their ovarian capacity took after for one and a half years from the finish of their treatment (5). Clinicians should be delicate in conveying the finding of essential ovarian deficiency to their patients (6). This analysis can be candidly horrendous and passionate requirements of the patient should be tended to as should additionally bolster be accessible (6). Sufficient data with respect to the finding ought to be given as indicated by Groff AA et al (6); most patients feel that deficient data diminished their feeling of control (6). Case Report Our patient is a17-year old single young lady who exhibited to our facility with optional amenorrhea. She had been determined to have intense lymphocytic leukemia (ALL) in 2002 at 5 years old. Treatment started with hyperfractionated chemotherapy with two courses; course A: cyclophosphamide, vincristine, doxorubicin, and dexamethasone and Course B: methotrexate and cytarabine (HCVAD). She backslid in 2007 and 2012 and was treated with methotrexate (MTX), dexamethasone (DEXA), vincristine, and L-asparagine. She at that point had add up to body radiation in 2012. In July 2012, persistent was alluded to King AbdulAziz therapeutic city at 15 years old with pancytopenia, she was again given hyperfractionated chemotherapy with two courses; course A: cyclophosphamide, vincristine, doxorubicin, and dexamethasone and Course B: methotrexate and cytarabine (HCVAD). After abatement she was given busulfan/cyclophosphamide then she had undeveloped cell transplant (SCT) from her full HLA coordinated kin. Persistent had menarche at 11 years, after which she had customary feminine cycles for a long time before she created optional amenorrhea. Progesterone challenge test was finished with no reaction. Hormonal profile indicated hypergonadotropic hypogonadism, ordinary thyroid capacity test and prolactin levels. Pelvic ultrasound demonstrated typical, however little measured uterus and ovaries. Chromosomal investigation demonstrated 46, XY, this befuddled her essential doctor was uncertain about the best arrangement of administration. On additionally audit of her past examinations, her chromosomal investigation one-year back had been an ordinary female genotype. So with the undeveloped cell transplant (SCT) from her HLA coordinated kin her genotype and her entire cell line had changed. With the impression of untimely ovarian inadequacy as her essential analysis, understanding was begun on recurrent hormonal treatment; estradiol valerate 2 mg, norgestrel 500 mcg (progyluton®, Bayer Health, Germany) for a half year. On follow up following 2 months, she didn’t begin progyluton in light of the fact that she thought she needs to begin fifth day of cycle; appropriate advising was done and understanding was seen 2 months a while later on hormonal treatment, calcium and vitamin D with withdrawal drains. Objective: To report an instance of essential ovarian inadequacy in multi year old, single young lady, who had ALL and was treated with chemo and radiotherapy, trailed by bone marrow transplant. Configuration: Case report. Setting: King Abdulaziz Medical City Patient(s): A patient determined to have essential ovarian inadequacy, subsequent to accepting chemo and radiotherapy for ALL. She later got bone marrow transplant from her HLA coordinated sibling. Intervention(s): Hormone substitution treatment. Principle Outcome Measure(s): After decision out different causes, directing and enthusiastic help where given to the patient. She was then begun on hormonal substitution treatment, calcium and vitamin D. Result(s): Patient began hormonal treatment and was followed in the facility. Conclusion(s): This case depicts an essential ovarian deficiency in a young lady post chemo and radiotherapy; it likewise portrays an adjustment in cell line following bone marrow transplant from her HLA coordinated sibling. Watchwords: Secondary amenorrhea, essential ovarian deficiency, Hormonal substitution treatment, foundational microorganism transplant. Affirmations: We might want to express our gratitude to Dr. Hanan Dahlawi for giving consideration to the patient. Discourse: Molding with chemotherapy and radiotherapy preceding foundational microorganism transplant (SCT) especially with cyclophosphamide and add up to body light will unavoidably prompt essential ovarian deficiency and barrenness (7). The danger of essential ovarian deficiency when patients get busulfan and cyclophosphamide is around 100%, like what our patient has gotten (7). We report this case as this present patient’s karyotype changed to a male karyotype following undeveloped cell transplant (SCT) from her full HLA coordinated kin. This prompted an indicative disarray at first, and was later comprehended after her karyotype one year sooner was investigated and genetist was counseled. There was no comparative cases revealed in the writing, albeit various situations where written about essential ovarian deficiency in youths, and effective pregnancy from that point. In this way, we prescribe to instruct doctor on changes happening after undeveloped cell transplant. Tragically, this patient was not offered richness conservation alternatives preceding her treatment; this again is another region of mindfulness that should be brought up in doctors. In any case, this patient was offered directing and hormonal treatment after she was alluded to our out patient facilities. The point of hormonal treatment in young people with essential ovarian deficiency incorporates the alleviation of hypoestrogenic manifestations notwithstanding bone help, cardiovascular, and sexual wellbeing (8). Youths may require higher measurements of estrogen than menopausal ladies to guarantee satisfactory substitution and ideal bone wellbeing (8).>